Oversoul
The Tentacled One
I had a few Gamekeeper ideas for this format, but going all-in on Slime Against Humanity was my favorite. The premise here is simple: ramp, kill Gamekeeper, and attack with gigantic slimes for the win.
Commander:
Gamekeeper
1 Ashnod's Altar
1 Battlefield Scrounger
1 Conjurer's Bauble
1 Fog
36 Forest
1 Gaea's Touch
1 Harrow
1 Longstalk Brawl
1 Lotus Petal
1 Lull
1 Moment's Peace
1 Nature's Claim
1 Nature's Lore
1 Prey Upon
1 Provoke
1 Quicksand
1 Rampant Growth
1 Reclaim
1 Savage Swipe
40 Slime Against Humanity
1 Smell Fear
1 Three Visits
1 Wild Growth
1 Wilt
1 Wings of Hubris
Commander:
Gamekeeper
1 Ashnod's Altar
1 Battlefield Scrounger
1 Conjurer's Bauble
1 Fog
36 Forest
1 Gaea's Touch
1 Harrow
1 Longstalk Brawl
1 Lotus Petal
1 Lull
1 Moment's Peace
1 Nature's Claim
1 Nature's Lore
1 Prey Upon
1 Provoke
1 Quicksand
1 Rampant Growth
1 Reclaim
1 Savage Swipe
40 Slime Against Humanity
1 Smell Fear
1 Three Visits
1 Wild Growth
1 Wilt
1 Wings of Hubris