A
Aneximines
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The purpose of this thread is to provide a large list of 'infinite' mana combos, so that all who thirst may be drenched.
Colorless
Pentavus/Thopter Squadron + Dross Scorpion + an artifact that you can tap for three or more mana (Gilded Lotus, Thran Dynamo, Basalt Monolith, Grim Monolith, Metalworker)
Metalworker + Voltaic Construct + 2 artifacts in hand
Metalworker + Staff of Domination + 3 artifacts in hand
Soul Foundry(0cc creature) + Dross Scorpion + mana altar (Phyrexian Altar, Ashnods Altar, or Krark-Clan Ironworks)
Chimeric Coils + Salvaging Station + Dross Scorpion + an artifact that taps for two mana
Triskelion + Scythe of the Wretched + Dross Scorpion + an artifact that you can tap for mana
Ornithopter + Skeleton Shard + Dross Scorpion + Gilded Lotus + something to sacrifice to (Altar of Dementia, Carrion Feeder, etc.)
2 Myr Retrievers + Ashnods Altar/Krark-Clan Ironworks + Genesis Chamber/Tangleroot/[Dross Scorpion + mana artifact]
2 Myr Retrievers + Phyrexian Altar + Urzas Incubator, 2 Helm of Awakening, or Mycosynth Golem (any mana altar will work in place of the Phyrexian one)
2 Staff of Domination + Clock of Omens + an artifactt that can tap for three mana (Basalt Monolith, Gilded Lotus, Metalworker, etc.)
2 Myr Retrievers + Dross Scorpion + an artifact that can tap for three mana + something to sacrifice to (Arcbound Ravager, Goblin Bombardment, etc.)
Karn, Silver Golem or Toymaker + Grim Monolith* + 2 Heartstones
with an empty library (Leveler): 2 Darksteel Colossus + Mycosynth Golem + Ashnods Altar/Krark-Clan Ironworks + Skullclamp + enough other artifacts to make the Colossus free
White
Enduring Renewal + 0cc creature + mana altar
Auriok Salvagers + Black Lotus/Lions Eye Diamond or Krark-Clan Ironworks + Mox Pearl
Second Sunrise + mana sources sacrificible to get 2WW (Tooth of Ramos, Archaeological Dig, Plains + Zuran Orb, etc.) + Conjurers Bauble + an empty library
Angelic Renewal + Auramancer + Ashnods Altar + Farrelite Priest + Pearl Medallion
Green
Maze of Ith + an attacking Argothian Elder
Verdant Succession + mana altar + Elvish Soultiller or 2 Nantuko Tracers
Priest of Titania + Argothian Elder + 2 Wirewood Lodges + another elf
Seeker of Skybreak + Krosan Restorer + threshold + Wirewood Lodge
Argothian Elder + Wirewood Lodge + a land with Fertile Ground**
Staff of Domination + Any creature that can tap for 5 or more mana (Rofellos, Priest of Titania, Viridian Joiner, Metalworker, Wirewood Channeler) or an animated land that can tap for 5 or more mana (Gaeas Cradle, Tolarian Academy, Serras Sanctum, Cloudpost (Clone), Elvish Guidance, Fertile Grounds**, etc.)
Fastbond + Storm Cauldron + damage prevention (Urzas Armor, Glacial Chasm)
Ashnods Altar + Words of Wilding + Fecundity + a sacrificial victim
Aluren + 2 Eternal Witnesses/Myr Retrievers/Junk Divers/ + a mana altar
Aluren + self-bouncer + Tangleroot
Saproling Cluster + Ashnods Altar + Fecundity (+ Legacy Weapon, Darksteel Colossus, or Serra Avatar to not run out of cards)
animated Isochron Scepter(Vitalize) + mana creatures
Voltaic Construct + Ashnods Transmogrant/Thran Forge + a creature that taps for at least three mana (Priest of Titania + 2 elves, Elvish Aberration, Viridian Joiner + Rancor, Krosan Restorer + threshold, etc.)
Squirrel Nest + Earthcraft + a mana altar or Gaeas Cradle
Blue
Balduvian Conjurer + Intruder Alarm + Shrieking Drake
Gilded Lotus + Pemmins Aura + Aphetto Alchemist/artifact animation/Synod Artificer
Power Artifact + Grim Monolith*
Voltaic Construct + aftifact animation (Karns Touch) + an artifact you can tap for three mana (Gilded Lotus, Mana Vault, etc.)
Vedalken Engineer + Pemmins Aura + Mycosynth Lattice
Quicksilver Elemental + March of the Machines + Gilded Lotus + Horseshoe Crab
Arcbound Reclaimer + Arcbound Worker + Ashnods Altar + Future Sight
Intruder Alarm + Shrieking Drake + 2 Silver Myr
Soul Foundry(0cc creature) + Intruder Alarm + Aphetto Alchemist/artifact animation + a mana creature
Snap-in-a-Scepter + Cloud of Faeries + Intruder Alarm + Aphetto Alchemist/artifact animation + mana creature/High Tide
Dream Tides + Thran Dynamo + artifact animation
Triskelion + Scythe of the Wretched + Intruder Alarm + a mana creature (Silver Myr)
Parallax Tide + High Tide + Treasure Trove + Words of Wind
Equilibrium + 2 Cloud of Faeries (one in hand) + High Tide
Palinchron + High Tide + 6 islands
Capsize + Tolarian Academy + Candelabra of Tawnos + other artifacts/other lands that produce multiple mana (Scorched Ruins, Urza's lands)
Tolarian Academy + Mind Over Matter + Treasure Trove + five artifacts + Legacy Weapon or something in your library so you don't run out of cards
Mischeivous Quanar + Turnabout + 9 mana to begin the loop
Black
Rotlung Reanimator + Conspiracy + mana altar + sacrificial victim
Decaying Soil + Ornithopter + Ashnods Altar + threshold
Mishras Groundbreaker + Cabal Coffers + Voltaic Construct + 5 swamps
Pentavus/Thopter Squadron + Sadistic Glee + Ashnods Altar
Su Chi/Cathodion/0cc artifact creature + Ashnods Altar + Dross Scorpion + Skeleton Shard + Bog Initiate/Initiates of the Ebon Hand
Isochron Scepter + Cabal Ritual + threshold + Voltaic Construct + Karn/Toymaker
4 Ashen Ghouls (in the graveyard) + Ashnods Altar + Initiates of the Ebon Hand/Bog Initiate
Red
Pentavus/Myr Matrix + Mana Echoes
Goblin Warrens + Mana Echoes + Skirk Prospector/Phyrexian Altar
Dragon Roost + Mana Echoes + Mycosynth Lattice/Gemstone Array
Goblin Welder + Ashnods Transmogrant + Dross Scorpion + Myr Moonvessel/Cathodion/Su-Chi + an artifact in your graveyard
Aggravated Assault + enough red or artifact mana creatures
Green/White
Enduring Renewal + Aluren + 3cc creature + mana altar (or a creature that you can sacrifice for mana like Blood Pet, Blood Vassal, Morgue Toad, or Tinder Wall)
Channel + Pulse of the Fields + Skyshroud Elf
Channel + Pentavus + 3 Soul Wardens/Leonin Elders
Green/Black
Fecundity + Mortuary can replace Enduring Renewal in the White and Green/White combos above
Symbiotic Elf + Ashnods altar, + Corpse Dance + Initiates (Initiates of the Ebon Hand, Bog Initiates)
Llanowar Druid + Corpse Dance + Initiates/Jointer Adept + six Forests (or three forests and Dual Nature)
Dual Nature + Penumbra creature (Penumbra Bobcat, e.g.) + Ashnods Altar + Corpse Dance + Initiates
Black/White
Carnival of Souls + Soul Warden + Triskelion + Scythe of the Wretched
Yawgmoths Bargain + Skirge Familiar + Confessor (+ Legacy Weapon, Darksteel Colossus, or Serra Avatar to not run out of cards)
Blue/White
Isochron Scepter(Roar of the Kha) + March of the Machines + an artifact you can tap for at least three mana (Gilded Lotus, Thran Dynamo, etc.)
Second Sunrise + Scrivener*** + something to sacrifice lands to (like Zuran Orb) + something to sacrifice the Scrivener to (like Altar of Dementia)
Second Sunrise + Scrivener*** + Phyrexian Altar + 3 other creatures
White/Red
Mobilization + Mana Echoes + Farrelite Priest/Gemstone Array
Green/Red
Aggravated Assault + mana creatures and/or animated lands.
Goblin Warrens + Mana Echoes + Skyshroud Elf
Goblin Warrens + Earthcraft + Fertile Ground** (without the Ground you just get 'infinite' Goblins)
Centaur Glade/Nemata/Master of the Hunt + Mana Echoes + Gemstone Array
Blue/Green
Lots and lots of these.
Pemmins Aura goes with
Wirewood Channeler, Argothian Elder, Krosen Restorer (at threshold), Earthcraft + Fertile Ground**, land animation + Fetile Ground**, Tolarian Academy + land animation + 2 artifacts, Gemstone Array and any creature that taps for three or more mana, Mycosynth Lattice + any creature that taps for two or more mana, ...
Vitalize-in-a-Scepter + artifact animation + mana artifacts and/or mana creatures
Elvish Aberration + Neurok Transmuter + Voltaic Construct
Aluren + Cloud of Faeries + Cowardice + Lightning Greaves
Barrin + Gaeas Cradle + Deranged Hermit + Could Of Faeries
Dream Tides + Lotus Vale + land animation
Krosan Restorer + Wirewood Lodge + threshold + Imagecrafter, Artificial Evolution, Unnatural Selection, Standardize, or Mistform Wakecaster
Quicksilver Elemental + Brass Man + a creature that produces at least two mana (Fyndhorn Elder, Nantuko Elder, Argothian Elder, etc.)
Mind Over Matter + Arcanis the Omnipotent + mana creatures + 3 that shuffle themselves into your library when discarded (Legacy Weapon, Darksteel Colossus, Serra Avatar)
Fastbond + Trade Routs + a land that taps for two or more mana (Tolarian Academy) + damage prevention (Glacial Chasm, Urzas Armor, etc.)
Intruder Alarm
goes with creatures that produce creatures like Voice of the Woods, Wall of Kelp, Jungle Patrol, Nemata, Grove Guardian, Phelddagrif, artifact animation/Aphetto Alchemist + Nusiance Engine/Hornet Cannon/Diamond Kaleidoscope/Soul Foundry/etc.
+
mana creatures and/or animated lands
it also goes with
Squirrel Nest + animated lands
and
Wirewood Symbiote + Imagecrafter + Nantuko Elder, Argothian Elder, or any creature that taps for two mana
and
Aluren + a 3cc self-bouncer (like Man-o-War) + mana creatures and/or animated lands
and
Shrieking Drake + 2 Birds of Paradise (or other suitable arrangment of mana creatures)
and
Words of Wilding + Symbiotic Deployment + mana creatures and/or animated lands
and
Mass land animation + Riptide Laboratory + a cheap wizard
Black/Green
Conspiracy (elf) + Wirewood Symbiote + Fyndhorn Elder or any creature that taps for at least two mana (one of them green)
(when you replay the Symbiote, it doesn't remember it was used before, so you can return him again)
Black/Blue
Rotlung Reanimator + Artificial Evolution + mana altar + sacrificial victim
Intruder Alarm + Hells Caretaker + Tangleroot or a mana creature (Leaden Myr) + 2 sacrificial victims (one in graveyard) (this Hell's Alarm engine can be used in many ways, such as with Rishadan Brigand and Vengeful Dead)
Black/Red
Worldgorger Dragon (in a graveyard) + Animate Dead or Necromancy (unless you can use this mana to win at instant speed, you need another creature in a graveyard or an instant way to remove the Dragon (Tormods Crypt, Swords to Plowshares, etc))
Lab Rats + Mana Echoes + Bog Initiate/Initiates of the Ebon Hand (+ Memory Crystals)
2 Hells Caretakers + Fervor/Mass Hysteria + Tangleroot
Living Death + Anarchist*** + Blood Vassal + Cathodion + mana altar (this can be mono-black if you use black magic like Buried Alive to put the Anachist into your graveyard)
Blue/Red
Intruder Alarm + Goblin Welder + Su-Chi/Cathodion (Onulet for life)
Palinchron + Mana Flare + 6 lands
Intruder Alarm + Sneak Attack + a self-bouncer (Man-o-War) + Iron Myr/Sisters of the Flame + another mana creature
Many-colored
Sliver Queen + Mana Echoes
Mobilization/Sacred Mesa/Dragon Roost/Goblin Warrens + Mana Echoes + Skyshroud Elf
Saber Ants + Pemmins Aura + Goblin Sharpshooter + Ashnods Altar
Intruder Alarm + Sneak Attack + Wizard Mentor + Skyshroud Elf + a creature that you can tap for mana for at least two mana (Priest of Titania, Rofellos, Nantuko Elder, etc.)
Sneak Attack + Wizard Mentor + a creature that can tap for three or more mana (Rofellos, Metalworker, Elvish Aberration) + Skyshroud Elf
Aluren + Equilibrium + Priest of Gix + any creature that costs 3 or less mana
Soul Warden + Carnival of Souls + Aluren + a self-bouncer (like Man-o'-War)
Victimize + Composite Golem + 2 of Eternal Witness/Anarchist
Channel + Yawgmoths Bargain + Words of Worship
Eternal Witness + Second Sunrise + something to sacrifice land to (Zuran Orb, Squandered Resources, Troubled Healer, Thaumatog, Lithatog, Trenching Steed, Spitting Spider, Coastal Hornclaw, etc.) + something to sacrifice the Witness to (Spawning Pit, Phyrexian Altar, etc.)
Priest of Yawgmoth + Cathodion/Su-Chi + Enduring Renewal + Intruder Alarm (Enduring Renewal can be replaced by Mortuary + Fecundity)
Donate + Price of Glory + Sacred Ground
Mischievous Quanar + Celestial Dawn/Mycosynth Lattice + Brightstone Ritual + 9 goblins
Sliver Queen + Hearstone + Ashnods Altar
Sliver Queen + Heartstone + Victual Sliver + Channel
Sliver Queen + Intruder Alarm + a creature you can tap for three or more mana (Metalworker, Elvish Aberration, animated Bassalt Monolith, animated Gaeas Cradle, etc.)
Limitless creatures +
Phyrexian Altar or Ashnods Altar
Carnival of Souls + Soul Warden
Tangleroot (in some cases)
Intruder Alarm + a creature you can tap for mana
Earthcraft, Citanul Hierophants, Seton (in some cases)
Limitless life +
Channel
Viridian Joiner + Hatred or Unspeakable Symbol
(in fact, any combo that makes the Joiner arbitrarily powerful is an 'infinite' mana combo)
Useful stuff
The mana altars are Ashnods Altar and Phyrexian Altar. The latter is generally preferable, the former is sometimes necessary. If the victim is an artifact, there's Krark-Clan Ironworks.
0cc creatures include Ornithopter, Phyrexian Walker, Shield Sphere, and various Kobolds. Affinity creatures (Razor Golem, Mycosynth Golem) are sometimes free. One mana clerics can be made free with an Edgewalker. 2cc or less artifact creatures with a creature type can be made free with Urzas Incubator. Artifact creatures can also be made free with Helm of Awakening.
Lands can be animated with Natures Revolt, Living Plane, Living Lands, Lifespark Spellbomb, Ambush Commander, Natural Emergence, Quirion Druid, Thelonite Druid, Verdant Touch, Natural Affinity, Kamahl, Fist of Krosa, Jolrael, Empress of Beasts, Rude Awakening, Life/Death, Mishras Groundbreaker, Living Terrain, Vivify, and Animate Land.
Artifacts can be animated by March of the Machines, Karn, Silver Golem, Xenic Poltergeist, Toymaker, Animate Artifact, and Karns Touch.
Mana fixers change the color of mana: Skyshroud Elf, Initiates of the Ebon Hand, Bog Initiate, Farrelite Priest, Nomadic Elf, Agent of Stromgald, Sunglasses of Urza. False Dawn, Celestial Dawn, and Mycosynth Lattice will usually work, and Gemstone Array will, sometimes, as well.
With a limitless supply of life and an Initiate, Blood Celebrant can fix your mana completely. For the life add Wellwisher to any of the combos with Intruder Alarm, or add Soul Warden to any of the combos with Aluren or Soul Foundry.
Creatures you can tap for mana:
Green mana creatures include Birds of Paradise, Llanowar Elves, Fyndhorn Elves, Elves of Deep Shadow, Birchlore Rangers, Rofellos, Llanowar Emissary, Priest of Titania, Utopia Tree, Skyshroud Elf, Urborg Elf, Quirion Elves, Heart Warden, Werebear, Wirewood Elf, Vine Trellis, Quirion Explorer, Harvester Druid, Viridian Joiner, Fyndhorn Elder, Nantuko Elder, Krosan Restorer, Seton, Krosan Protector, Ley Druid, Juniper Order Druid, Wirewood Channeler, Argothian Elder, Citanul Hierophants, Skyshroud Troopers, and Elvish Aberration.
There's also Copper Myr, Gold Myr, Silver Myr, Leaden Myr, Iron Myr, Apprentice Wizard, Llanowar Dead, Lotus Guardian, Manakin, Metalworker, Millikin, Princess Lucrezia, Riven Turnbull, Sea Scryer, Sisters of the Flame, Vedalken Engineer, Krark-Clan Stoker and Sunastian Falconer.
Any creature with Paradise Mantle, Earthcraft, or Multani's Harmony.
Any animated, mana-producing lands or artifacts.
Artifacts you can tap for mana (noncreature):
Mox Emerald, Mox Jet, Mox Pearl, Mox Ruby, Mox Sapphire, Mox Diamond, Chrome Mox, Mana Crypt, Ancient Den, Darksteel Citadel, Great Furnace, Seat of the Synod, Tree of Tales, Vault of Whispers, Mana Vault, Sol Ring, Grim Monolith, Talisman of Dominance, Talisman of Impulse, Talisman of Indulgence, Talisman of Progress, Talisman of Unity, Fellwar Stone, Mind Stone, Guardian Idol, Charcoal Diamond, Fire Diamond, Marble Diamond, Moss Diamond, Sky Diamond, Star Compass, Basalt Monolith, Worn Powerstone, Darksteel Ingot, Bloodstone Cameo, Drake-Skull Cameo, Seashell Cameo, Tigereye Cameo, Mana Prism, Sol Grail, Kyren Toy, Serum Powder, Eye of Ramos, Heart of Ramos, Horn of Ramos, Skull of Ramos, Tooth of Ramos, Thran Dynamo, Sisays Ring, Ur-Golems Eye, Black Mana Battery, Blue Mana Battery, Green Mana Battery, Red Mana Battery, White Mana Battery, Charmed Pendant, Gilded Lotus
Self-bouncers can return themselves to your hand when they come into play. Those that can be used with Aluren include Man-o-War, Cavern Harpy, Fleetfoot Panther, Horned Kavu, Lava Zombie, Shrieking Drake, Silver Drake, and 2 Timid Drakes. Others include Blinking Spirit, Doomsday Specter, Marsh Crocodile, Razing Snidd, Sawtooth Loon, Shivan Wurm, Sparkcaster, and Steel Leaf Paladin.
*- Basalt Monolith (note its errata) can also untap itself with the help of a mana fixer to change the source of the mana (like money laundering, but with mana)
**- Fertile Ground can usually be replaced with Wild Growth, Overgrowth, Elvish Guidance, Overlaid Terrain, Extraplanar Lens, Mana Flare, Dawns Reflection, or Miraris Wake
***- Eternal Witness will work in the place of Scrivener or Anarchist
Definition: By "'infinite' mana combo" I mean a set of cards which, when in the right zones, give you access to arbitrarily large amounts of mana. Of course it is impossible to ever have an infinite amount of mana in your pool, which is why I use the '' marks. By 'infinite' I mean effectively infinite, limitless, or arbitrarily large. The presence of a few mana producing lands and lack of summoning sickness is typically taken for granted and not mentioned.
Credit: Each of these combos has, no doubt, been discovered, independently, by dozens of people. Because of this fact, and the logistical problems involved in finding the identity of the first person ever to think of each combo, none of the combos will be credited. In particular, I do not take credit for any of these combos.
Please donate an 'infinite' mana combo to the list.
Colorless
Pentavus/Thopter Squadron + Dross Scorpion + an artifact that you can tap for three or more mana (Gilded Lotus, Thran Dynamo, Basalt Monolith, Grim Monolith, Metalworker)
Metalworker + Voltaic Construct + 2 artifacts in hand
Metalworker + Staff of Domination + 3 artifacts in hand
Soul Foundry(0cc creature) + Dross Scorpion + mana altar (Phyrexian Altar, Ashnods Altar, or Krark-Clan Ironworks)
Chimeric Coils + Salvaging Station + Dross Scorpion + an artifact that taps for two mana
Triskelion + Scythe of the Wretched + Dross Scorpion + an artifact that you can tap for mana
Ornithopter + Skeleton Shard + Dross Scorpion + Gilded Lotus + something to sacrifice to (Altar of Dementia, Carrion Feeder, etc.)
2 Myr Retrievers + Ashnods Altar/Krark-Clan Ironworks + Genesis Chamber/Tangleroot/[Dross Scorpion + mana artifact]
2 Myr Retrievers + Phyrexian Altar + Urzas Incubator, 2 Helm of Awakening, or Mycosynth Golem (any mana altar will work in place of the Phyrexian one)
2 Staff of Domination + Clock of Omens + an artifactt that can tap for three mana (Basalt Monolith, Gilded Lotus, Metalworker, etc.)
2 Myr Retrievers + Dross Scorpion + an artifact that can tap for three mana + something to sacrifice to (Arcbound Ravager, Goblin Bombardment, etc.)
Karn, Silver Golem or Toymaker + Grim Monolith* + 2 Heartstones
with an empty library (Leveler): 2 Darksteel Colossus + Mycosynth Golem + Ashnods Altar/Krark-Clan Ironworks + Skullclamp + enough other artifacts to make the Colossus free
White
Enduring Renewal + 0cc creature + mana altar
Auriok Salvagers + Black Lotus/Lions Eye Diamond or Krark-Clan Ironworks + Mox Pearl
Second Sunrise + mana sources sacrificible to get 2WW (Tooth of Ramos, Archaeological Dig, Plains + Zuran Orb, etc.) + Conjurers Bauble + an empty library
Angelic Renewal + Auramancer + Ashnods Altar + Farrelite Priest + Pearl Medallion
Green
Maze of Ith + an attacking Argothian Elder
Verdant Succession + mana altar + Elvish Soultiller or 2 Nantuko Tracers
Priest of Titania + Argothian Elder + 2 Wirewood Lodges + another elf
Seeker of Skybreak + Krosan Restorer + threshold + Wirewood Lodge
Argothian Elder + Wirewood Lodge + a land with Fertile Ground**
Staff of Domination + Any creature that can tap for 5 or more mana (Rofellos, Priest of Titania, Viridian Joiner, Metalworker, Wirewood Channeler) or an animated land that can tap for 5 or more mana (Gaeas Cradle, Tolarian Academy, Serras Sanctum, Cloudpost (Clone), Elvish Guidance, Fertile Grounds**, etc.)
Fastbond + Storm Cauldron + damage prevention (Urzas Armor, Glacial Chasm)
Ashnods Altar + Words of Wilding + Fecundity + a sacrificial victim
Aluren + 2 Eternal Witnesses/Myr Retrievers/Junk Divers/ + a mana altar
Aluren + self-bouncer + Tangleroot
Saproling Cluster + Ashnods Altar + Fecundity (+ Legacy Weapon, Darksteel Colossus, or Serra Avatar to not run out of cards)
animated Isochron Scepter(Vitalize) + mana creatures
Voltaic Construct + Ashnods Transmogrant/Thran Forge + a creature that taps for at least three mana (Priest of Titania + 2 elves, Elvish Aberration, Viridian Joiner + Rancor, Krosan Restorer + threshold, etc.)
Squirrel Nest + Earthcraft + a mana altar or Gaeas Cradle
Blue
Balduvian Conjurer + Intruder Alarm + Shrieking Drake
Gilded Lotus + Pemmins Aura + Aphetto Alchemist/artifact animation/Synod Artificer
Power Artifact + Grim Monolith*
Voltaic Construct + aftifact animation (Karns Touch) + an artifact you can tap for three mana (Gilded Lotus, Mana Vault, etc.)
Vedalken Engineer + Pemmins Aura + Mycosynth Lattice
Quicksilver Elemental + March of the Machines + Gilded Lotus + Horseshoe Crab
Arcbound Reclaimer + Arcbound Worker + Ashnods Altar + Future Sight
Intruder Alarm + Shrieking Drake + 2 Silver Myr
Soul Foundry(0cc creature) + Intruder Alarm + Aphetto Alchemist/artifact animation + a mana creature
Snap-in-a-Scepter + Cloud of Faeries + Intruder Alarm + Aphetto Alchemist/artifact animation + mana creature/High Tide
Dream Tides + Thran Dynamo + artifact animation
Triskelion + Scythe of the Wretched + Intruder Alarm + a mana creature (Silver Myr)
Parallax Tide + High Tide + Treasure Trove + Words of Wind
Equilibrium + 2 Cloud of Faeries (one in hand) + High Tide
Palinchron + High Tide + 6 islands
Capsize + Tolarian Academy + Candelabra of Tawnos + other artifacts/other lands that produce multiple mana (Scorched Ruins, Urza's lands)
Tolarian Academy + Mind Over Matter + Treasure Trove + five artifacts + Legacy Weapon or something in your library so you don't run out of cards
Mischeivous Quanar + Turnabout + 9 mana to begin the loop
Black
Rotlung Reanimator + Conspiracy + mana altar + sacrificial victim
Decaying Soil + Ornithopter + Ashnods Altar + threshold
Mishras Groundbreaker + Cabal Coffers + Voltaic Construct + 5 swamps
Pentavus/Thopter Squadron + Sadistic Glee + Ashnods Altar
Su Chi/Cathodion/0cc artifact creature + Ashnods Altar + Dross Scorpion + Skeleton Shard + Bog Initiate/Initiates of the Ebon Hand
Isochron Scepter + Cabal Ritual + threshold + Voltaic Construct + Karn/Toymaker
4 Ashen Ghouls (in the graveyard) + Ashnods Altar + Initiates of the Ebon Hand/Bog Initiate
Red
Pentavus/Myr Matrix + Mana Echoes
Goblin Warrens + Mana Echoes + Skirk Prospector/Phyrexian Altar
Dragon Roost + Mana Echoes + Mycosynth Lattice/Gemstone Array
Goblin Welder + Ashnods Transmogrant + Dross Scorpion + Myr Moonvessel/Cathodion/Su-Chi + an artifact in your graveyard
Aggravated Assault + enough red or artifact mana creatures
Green/White
Enduring Renewal + Aluren + 3cc creature + mana altar (or a creature that you can sacrifice for mana like Blood Pet, Blood Vassal, Morgue Toad, or Tinder Wall)
Channel + Pulse of the Fields + Skyshroud Elf
Channel + Pentavus + 3 Soul Wardens/Leonin Elders
Green/Black
Fecundity + Mortuary can replace Enduring Renewal in the White and Green/White combos above
Symbiotic Elf + Ashnods altar, + Corpse Dance + Initiates (Initiates of the Ebon Hand, Bog Initiates)
Llanowar Druid + Corpse Dance + Initiates/Jointer Adept + six Forests (or three forests and Dual Nature)
Dual Nature + Penumbra creature (Penumbra Bobcat, e.g.) + Ashnods Altar + Corpse Dance + Initiates
Black/White
Carnival of Souls + Soul Warden + Triskelion + Scythe of the Wretched
Yawgmoths Bargain + Skirge Familiar + Confessor (+ Legacy Weapon, Darksteel Colossus, or Serra Avatar to not run out of cards)
Blue/White
Isochron Scepter(Roar of the Kha) + March of the Machines + an artifact you can tap for at least three mana (Gilded Lotus, Thran Dynamo, etc.)
Second Sunrise + Scrivener*** + something to sacrifice lands to (like Zuran Orb) + something to sacrifice the Scrivener to (like Altar of Dementia)
Second Sunrise + Scrivener*** + Phyrexian Altar + 3 other creatures
White/Red
Mobilization + Mana Echoes + Farrelite Priest/Gemstone Array
Green/Red
Aggravated Assault + mana creatures and/or animated lands.
Goblin Warrens + Mana Echoes + Skyshroud Elf
Goblin Warrens + Earthcraft + Fertile Ground** (without the Ground you just get 'infinite' Goblins)
Centaur Glade/Nemata/Master of the Hunt + Mana Echoes + Gemstone Array
Blue/Green
Lots and lots of these.
Pemmins Aura goes with
Wirewood Channeler, Argothian Elder, Krosen Restorer (at threshold), Earthcraft + Fertile Ground**, land animation + Fetile Ground**, Tolarian Academy + land animation + 2 artifacts, Gemstone Array and any creature that taps for three or more mana, Mycosynth Lattice + any creature that taps for two or more mana, ...
Vitalize-in-a-Scepter + artifact animation + mana artifacts and/or mana creatures
Elvish Aberration + Neurok Transmuter + Voltaic Construct
Aluren + Cloud of Faeries + Cowardice + Lightning Greaves
Barrin + Gaeas Cradle + Deranged Hermit + Could Of Faeries
Dream Tides + Lotus Vale + land animation
Krosan Restorer + Wirewood Lodge + threshold + Imagecrafter, Artificial Evolution, Unnatural Selection, Standardize, or Mistform Wakecaster
Quicksilver Elemental + Brass Man + a creature that produces at least two mana (Fyndhorn Elder, Nantuko Elder, Argothian Elder, etc.)
Mind Over Matter + Arcanis the Omnipotent + mana creatures + 3 that shuffle themselves into your library when discarded (Legacy Weapon, Darksteel Colossus, Serra Avatar)
Fastbond + Trade Routs + a land that taps for two or more mana (Tolarian Academy) + damage prevention (Glacial Chasm, Urzas Armor, etc.)
Intruder Alarm
goes with creatures that produce creatures like Voice of the Woods, Wall of Kelp, Jungle Patrol, Nemata, Grove Guardian, Phelddagrif, artifact animation/Aphetto Alchemist + Nusiance Engine/Hornet Cannon/Diamond Kaleidoscope/Soul Foundry/etc.
+
mana creatures and/or animated lands
it also goes with
Squirrel Nest + animated lands
and
Wirewood Symbiote + Imagecrafter + Nantuko Elder, Argothian Elder, or any creature that taps for two mana
and
Aluren + a 3cc self-bouncer (like Man-o-War) + mana creatures and/or animated lands
and
Shrieking Drake + 2 Birds of Paradise (or other suitable arrangment of mana creatures)
and
Words of Wilding + Symbiotic Deployment + mana creatures and/or animated lands
and
Mass land animation + Riptide Laboratory + a cheap wizard
Black/Green
Conspiracy (elf) + Wirewood Symbiote + Fyndhorn Elder or any creature that taps for at least two mana (one of them green)
(when you replay the Symbiote, it doesn't remember it was used before, so you can return him again)
Black/Blue
Rotlung Reanimator + Artificial Evolution + mana altar + sacrificial victim
Intruder Alarm + Hells Caretaker + Tangleroot or a mana creature (Leaden Myr) + 2 sacrificial victims (one in graveyard) (this Hell's Alarm engine can be used in many ways, such as with Rishadan Brigand and Vengeful Dead)
Black/Red
Worldgorger Dragon (in a graveyard) + Animate Dead or Necromancy (unless you can use this mana to win at instant speed, you need another creature in a graveyard or an instant way to remove the Dragon (Tormods Crypt, Swords to Plowshares, etc))
Lab Rats + Mana Echoes + Bog Initiate/Initiates of the Ebon Hand (+ Memory Crystals)
2 Hells Caretakers + Fervor/Mass Hysteria + Tangleroot
Living Death + Anarchist*** + Blood Vassal + Cathodion + mana altar (this can be mono-black if you use black magic like Buried Alive to put the Anachist into your graveyard)
Blue/Red
Intruder Alarm + Goblin Welder + Su-Chi/Cathodion (Onulet for life)
Palinchron + Mana Flare + 6 lands
Intruder Alarm + Sneak Attack + a self-bouncer (Man-o-War) + Iron Myr/Sisters of the Flame + another mana creature
Many-colored
Sliver Queen + Mana Echoes
Mobilization/Sacred Mesa/Dragon Roost/Goblin Warrens + Mana Echoes + Skyshroud Elf
Saber Ants + Pemmins Aura + Goblin Sharpshooter + Ashnods Altar
Intruder Alarm + Sneak Attack + Wizard Mentor + Skyshroud Elf + a creature that you can tap for mana for at least two mana (Priest of Titania, Rofellos, Nantuko Elder, etc.)
Sneak Attack + Wizard Mentor + a creature that can tap for three or more mana (Rofellos, Metalworker, Elvish Aberration) + Skyshroud Elf
Aluren + Equilibrium + Priest of Gix + any creature that costs 3 or less mana
Soul Warden + Carnival of Souls + Aluren + a self-bouncer (like Man-o'-War)
Victimize + Composite Golem + 2 of Eternal Witness/Anarchist
Channel + Yawgmoths Bargain + Words of Worship
Eternal Witness + Second Sunrise + something to sacrifice land to (Zuran Orb, Squandered Resources, Troubled Healer, Thaumatog, Lithatog, Trenching Steed, Spitting Spider, Coastal Hornclaw, etc.) + something to sacrifice the Witness to (Spawning Pit, Phyrexian Altar, etc.)
Priest of Yawgmoth + Cathodion/Su-Chi + Enduring Renewal + Intruder Alarm (Enduring Renewal can be replaced by Mortuary + Fecundity)
Donate + Price of Glory + Sacred Ground
Mischievous Quanar + Celestial Dawn/Mycosynth Lattice + Brightstone Ritual + 9 goblins
Sliver Queen + Hearstone + Ashnods Altar
Sliver Queen + Heartstone + Victual Sliver + Channel
Sliver Queen + Intruder Alarm + a creature you can tap for three or more mana (Metalworker, Elvish Aberration, animated Bassalt Monolith, animated Gaeas Cradle, etc.)
Limitless creatures +
Phyrexian Altar or Ashnods Altar
Carnival of Souls + Soul Warden
Tangleroot (in some cases)
Intruder Alarm + a creature you can tap for mana
Earthcraft, Citanul Hierophants, Seton (in some cases)
Limitless life +
Channel
Viridian Joiner + Hatred or Unspeakable Symbol
(in fact, any combo that makes the Joiner arbitrarily powerful is an 'infinite' mana combo)
Useful stuff
The mana altars are Ashnods Altar and Phyrexian Altar. The latter is generally preferable, the former is sometimes necessary. If the victim is an artifact, there's Krark-Clan Ironworks.
0cc creatures include Ornithopter, Phyrexian Walker, Shield Sphere, and various Kobolds. Affinity creatures (Razor Golem, Mycosynth Golem) are sometimes free. One mana clerics can be made free with an Edgewalker. 2cc or less artifact creatures with a creature type can be made free with Urzas Incubator. Artifact creatures can also be made free with Helm of Awakening.
Lands can be animated with Natures Revolt, Living Plane, Living Lands, Lifespark Spellbomb, Ambush Commander, Natural Emergence, Quirion Druid, Thelonite Druid, Verdant Touch, Natural Affinity, Kamahl, Fist of Krosa, Jolrael, Empress of Beasts, Rude Awakening, Life/Death, Mishras Groundbreaker, Living Terrain, Vivify, and Animate Land.
Artifacts can be animated by March of the Machines, Karn, Silver Golem, Xenic Poltergeist, Toymaker, Animate Artifact, and Karns Touch.
Mana fixers change the color of mana: Skyshroud Elf, Initiates of the Ebon Hand, Bog Initiate, Farrelite Priest, Nomadic Elf, Agent of Stromgald, Sunglasses of Urza. False Dawn, Celestial Dawn, and Mycosynth Lattice will usually work, and Gemstone Array will, sometimes, as well.
With a limitless supply of life and an Initiate, Blood Celebrant can fix your mana completely. For the life add Wellwisher to any of the combos with Intruder Alarm, or add Soul Warden to any of the combos with Aluren or Soul Foundry.
Creatures you can tap for mana:
Green mana creatures include Birds of Paradise, Llanowar Elves, Fyndhorn Elves, Elves of Deep Shadow, Birchlore Rangers, Rofellos, Llanowar Emissary, Priest of Titania, Utopia Tree, Skyshroud Elf, Urborg Elf, Quirion Elves, Heart Warden, Werebear, Wirewood Elf, Vine Trellis, Quirion Explorer, Harvester Druid, Viridian Joiner, Fyndhorn Elder, Nantuko Elder, Krosan Restorer, Seton, Krosan Protector, Ley Druid, Juniper Order Druid, Wirewood Channeler, Argothian Elder, Citanul Hierophants, Skyshroud Troopers, and Elvish Aberration.
There's also Copper Myr, Gold Myr, Silver Myr, Leaden Myr, Iron Myr, Apprentice Wizard, Llanowar Dead, Lotus Guardian, Manakin, Metalworker, Millikin, Princess Lucrezia, Riven Turnbull, Sea Scryer, Sisters of the Flame, Vedalken Engineer, Krark-Clan Stoker and Sunastian Falconer.
Any creature with Paradise Mantle, Earthcraft, or Multani's Harmony.
Any animated, mana-producing lands or artifacts.
Artifacts you can tap for mana (noncreature):
Mox Emerald, Mox Jet, Mox Pearl, Mox Ruby, Mox Sapphire, Mox Diamond, Chrome Mox, Mana Crypt, Ancient Den, Darksteel Citadel, Great Furnace, Seat of the Synod, Tree of Tales, Vault of Whispers, Mana Vault, Sol Ring, Grim Monolith, Talisman of Dominance, Talisman of Impulse, Talisman of Indulgence, Talisman of Progress, Talisman of Unity, Fellwar Stone, Mind Stone, Guardian Idol, Charcoal Diamond, Fire Diamond, Marble Diamond, Moss Diamond, Sky Diamond, Star Compass, Basalt Monolith, Worn Powerstone, Darksteel Ingot, Bloodstone Cameo, Drake-Skull Cameo, Seashell Cameo, Tigereye Cameo, Mana Prism, Sol Grail, Kyren Toy, Serum Powder, Eye of Ramos, Heart of Ramos, Horn of Ramos, Skull of Ramos, Tooth of Ramos, Thran Dynamo, Sisays Ring, Ur-Golems Eye, Black Mana Battery, Blue Mana Battery, Green Mana Battery, Red Mana Battery, White Mana Battery, Charmed Pendant, Gilded Lotus
Self-bouncers can return themselves to your hand when they come into play. Those that can be used with Aluren include Man-o-War, Cavern Harpy, Fleetfoot Panther, Horned Kavu, Lava Zombie, Shrieking Drake, Silver Drake, and 2 Timid Drakes. Others include Blinking Spirit, Doomsday Specter, Marsh Crocodile, Razing Snidd, Sawtooth Loon, Shivan Wurm, Sparkcaster, and Steel Leaf Paladin.
*- Basalt Monolith (note its errata) can also untap itself with the help of a mana fixer to change the source of the mana (like money laundering, but with mana)
**- Fertile Ground can usually be replaced with Wild Growth, Overgrowth, Elvish Guidance, Overlaid Terrain, Extraplanar Lens, Mana Flare, Dawns Reflection, or Miraris Wake
***- Eternal Witness will work in the place of Scrivener or Anarchist
Definition: By "'infinite' mana combo" I mean a set of cards which, when in the right zones, give you access to arbitrarily large amounts of mana. Of course it is impossible to ever have an infinite amount of mana in your pool, which is why I use the '' marks. By 'infinite' I mean effectively infinite, limitless, or arbitrarily large. The presence of a few mana producing lands and lack of summoning sickness is typically taken for granted and not mentioned.
Credit: Each of these combos has, no doubt, been discovered, independently, by dozens of people. Because of this fact, and the logistical problems involved in finding the identity of the first person ever to think of each combo, none of the combos will be credited. In particular, I do not take credit for any of these combos.
Please donate an 'infinite' mana combo to the list.