Oversoul
The Tentacled One
Tawnos seems really good. I am surprised that this commander isn't more popular. Mostly built this one with Sands of Time in mind, but it's experimental.
Commander:
1 Tawnos, Urza's Apprentice
1 Academy Ruins
1 Arcane Denial
1 Arcane Signet
1 Arcbound Ravager
1 Basalt Monolith
1 Brainstorm
1 Buried Ruin
1 Candelabra of Tawnos
1 Clock of Omens
1 Cloud Key
1 Command Tower
1 Copy Artifact
1 Cyclonic Rift
1 Darksteel Citadel
1 Emry, Lurker of the Loch
1 Enthusiastic Mechanaut
1 Etherium Sculptor
1 Fabricate
1 Fierce Guardianship
1 Force of Will
1 Foundry Inspector
1 Gilded Lotus
1 Glimmervoid
1 Goblin Engineer
1 Goblin Welder
1 Great Furnace
1 Grim Monolith
1 Hangarback Walker
1 Inventors' Fair
4 Island
1 Jhoira's Familiar
1 Krark-Clan Ironworks
1 Lightning Greaves
1 Lux Cannon
1 Magistrate's Scepter
1 Mana Crypt
1 Mana Drain
1 Mana Vault
1 Manifold Key
1 Maze of Ith
1 Minamo, School at Water's Edge
1 Mishra's Factory
1 Mishra's Workshop
4 Mountain
1 Mox Opal
1 Myr Retriever
1 Mystic Forge
1 Nim Deathmantle
1 Phyrexian Metamorph
1 Power Artifact
1 Reliquary Tower
1 Reshape
1 Rhystic Study
1 Rings of Brighthearth
1 Sands of Time
1 Scalding Tarn
1 Scrap Mastery
1 Scrap Trawler
1 Sculpting Steel
1 Seat of the Synod
1 Sensei's Divining Top
1 Shimmer Myr
1 Snow-Covered Island
1 Snow-Covered Mountain
1 Sol Ring
1 Spine of Ish Sah
1 Staff of Domination
1 Steam Vents
1 Steel Overseer
1 Strionic Resonator
1 Strip Mine
1 Su-Chi
1 Swan Song
1 Talisman of Creativity
1 Tezzeret the Seeker
1 Tezzeret, Artifice Master
1 Thirst for Knowledge
1 Thought Monitor
1 Thoughtcast
1 Thran Dynamo
1 Trading Post
1 Transmute Artifact
1 Trash for Treasure
1 Treasure Vault
1 Ugin, the Ineffable
1 Urza, Lord High Artificer
1 Urza's Saga
1 Volcanic Island
1 Voltaic Key
1 Walking Ballista
1 Wasteland
1 Wheel of Fortune
1 Whir of Invention
Commander:
1 Tawnos, Urza's Apprentice
1 Academy Ruins
1 Arcane Denial
1 Arcane Signet
1 Arcbound Ravager
1 Basalt Monolith
1 Brainstorm
1 Buried Ruin
1 Candelabra of Tawnos
1 Clock of Omens
1 Cloud Key
1 Command Tower
1 Copy Artifact
1 Cyclonic Rift
1 Darksteel Citadel
1 Emry, Lurker of the Loch
1 Enthusiastic Mechanaut
1 Etherium Sculptor
1 Fabricate
1 Fierce Guardianship
1 Force of Will
1 Foundry Inspector
1 Gilded Lotus
1 Glimmervoid
1 Goblin Engineer
1 Goblin Welder
1 Great Furnace
1 Grim Monolith
1 Hangarback Walker
1 Inventors' Fair
4 Island
1 Jhoira's Familiar
1 Krark-Clan Ironworks
1 Lightning Greaves
1 Lux Cannon
1 Magistrate's Scepter
1 Mana Crypt
1 Mana Drain
1 Mana Vault
1 Manifold Key
1 Maze of Ith
1 Minamo, School at Water's Edge
1 Mishra's Factory
1 Mishra's Workshop
4 Mountain
1 Mox Opal
1 Myr Retriever
1 Mystic Forge
1 Nim Deathmantle
1 Phyrexian Metamorph
1 Power Artifact
1 Reliquary Tower
1 Reshape
1 Rhystic Study
1 Rings of Brighthearth
1 Sands of Time
1 Scalding Tarn
1 Scrap Mastery
1 Scrap Trawler
1 Sculpting Steel
1 Seat of the Synod
1 Sensei's Divining Top
1 Shimmer Myr
1 Snow-Covered Island
1 Snow-Covered Mountain
1 Sol Ring
1 Spine of Ish Sah
1 Staff of Domination
1 Steam Vents
1 Steel Overseer
1 Strionic Resonator
1 Strip Mine
1 Su-Chi
1 Swan Song
1 Talisman of Creativity
1 Tezzeret the Seeker
1 Tezzeret, Artifice Master
1 Thirst for Knowledge
1 Thought Monitor
1 Thoughtcast
1 Thran Dynamo
1 Trading Post
1 Transmute Artifact
1 Trash for Treasure
1 Treasure Vault
1 Ugin, the Ineffable
1 Urza, Lord High Artificer
1 Urza's Saga
1 Volcanic Island
1 Voltaic Key
1 Walking Ballista
1 Wasteland
1 Wheel of Fortune
1 Whir of Invention