Oversoul
The Tentacled One
There are three blue cards that swap control of lands (Political Trickery, Shifting Borders, and Vedalken Plotter). There are also some lands that can be activated such that they will not remain in the possession of the player they are traded to (Thawing Glaciers, Undiscovered Paradise, Rainbow Vale). I've played around with this suite of cards in previous EDH decks, but it's not really dense enough to strong enough to be its own proper theme. So of course, I took that as a challenge. This is a Domain deck, but it has only two basic land type in the maindeck, so trading lands to increase Domain count is a very real option here.
It's not a powerful deck, but it could be a very annoying one.
Commander:
1 Nael, Avizoa Aeronaut
1 Arcane Denial
1 Astral Dragon
1 Bala Ged Recovery
1 Beast Within
1 Brainstorm
1 Breeding Pool
1 Caustic Caterpillar
1 Chain of Vapor
1 City of Traitors
1 Collective Restraint
1 Conduit of Worlds
1 Deadeye Navigator
1 Deserted Temple
1 Devouring Deep
1 Displacer Kitten
1 Dream Thrush
1 Dreamscape Artist
1 Dryad of the Ilysian Grove
1 Echo of Eons
1 Echoing Deeps
1 Elvish Reclaimer
1 Erratic Portal
1 Eternal Witness
1 Evacuation
1 Extravagant Replication
1 Fellwar Stone
1 Flooded Strand
1 Followed Footsteps
8 Forest
1 Gaea's Liege
1 Genesis
1 Grixis Illusionist
1 Growth Spiral
1 Harrow
1 Imprisoned in the Moon
8 Island
1 Ivy Dancer
1 Loot, Exuberant Explorer
1 Lush Growth
1 Magnigoth Treefolk
1 Matca Rioters
1 Memory's Journey
1 Misty Rainforest
1 Mystic Compass
1 Nylea's Presence
1 Otawara, Soaring City
1 Phantasmal Terrain
1 Pixie Illusionist
1 Political Trickery
1 Polluted Delta
1 Progenitor Mimic
1 Rainbow Vale
1 Realmwright
1 Reef Shaman
1 Regrowth
1 River Boa
1 Scalding Tarn
1 Season of Weaving
1 Seasons Past
1 Shifting Borders
1 Shimmering Mirage
1 Song of the Dryads
1 Spike Weaver
1 Spore Frog
1 Strip Mine
1 Terastodon
1 Thawing Glaciers
1 Tideshaper Mystic
1 Tolaria West
1 Tradewind Rider
1 Traveler's Cloak
1 Tropical Island
1 Ulvenwald Hydra
1 Undiscovered Paradise
1 Unseen Walker
1 Urborg, Tomb of Yawgmoth
1 Urza's Cave
1 Vedalken Plotter
1 Verdant Catacombs
1 Virtue of Knowledge
1 Wayfarer's Bauble
1 Weatherseed Elf
1 Windswept Heath
1 Wooded Foothills
1 Yavimaya, Cradle of Growth
It's not a powerful deck, but it could be a very annoying one.
Commander:
1 Nael, Avizoa Aeronaut
1 Arcane Denial
1 Astral Dragon
1 Bala Ged Recovery
1 Beast Within
1 Brainstorm
1 Breeding Pool
1 Caustic Caterpillar
1 Chain of Vapor
1 City of Traitors
1 Collective Restraint
1 Conduit of Worlds
1 Deadeye Navigator
1 Deserted Temple
1 Devouring Deep
1 Displacer Kitten
1 Dream Thrush
1 Dreamscape Artist
1 Dryad of the Ilysian Grove
1 Echo of Eons
1 Echoing Deeps
1 Elvish Reclaimer
1 Erratic Portal
1 Eternal Witness
1 Evacuation
1 Extravagant Replication
1 Fellwar Stone
1 Flooded Strand
1 Followed Footsteps
8 Forest
1 Gaea's Liege
1 Genesis
1 Grixis Illusionist
1 Growth Spiral
1 Harrow
1 Imprisoned in the Moon
8 Island
1 Ivy Dancer
1 Loot, Exuberant Explorer
1 Lush Growth
1 Magnigoth Treefolk
1 Matca Rioters
1 Memory's Journey
1 Misty Rainforest
1 Mystic Compass
1 Nylea's Presence
1 Otawara, Soaring City
1 Phantasmal Terrain
1 Pixie Illusionist
1 Political Trickery
1 Polluted Delta
1 Progenitor Mimic
1 Rainbow Vale
1 Realmwright
1 Reef Shaman
1 Regrowth
1 River Boa
1 Scalding Tarn
1 Season of Weaving
1 Seasons Past
1 Shifting Borders
1 Shimmering Mirage
1 Song of the Dryads
1 Spike Weaver
1 Spore Frog
1 Strip Mine
1 Terastodon
1 Thawing Glaciers
1 Tideshaper Mystic
1 Tolaria West
1 Tradewind Rider
1 Traveler's Cloak
1 Tropical Island
1 Ulvenwald Hydra
1 Undiscovered Paradise
1 Unseen Walker
1 Urborg, Tomb of Yawgmoth
1 Urza's Cave
1 Vedalken Plotter
1 Verdant Catacombs
1 Virtue of Knowledge
1 Wayfarer's Bauble
1 Weatherseed Elf
1 Windswept Heath
1 Wooded Foothills
1 Yavimaya, Cradle of Growth