That Time I Got Reincarnated as a Slime [PDH]

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
 

Oversoul

The Tentacled One
I built this with 6 copies of Slime Against Humanity and 34 basic Mountains as placeholders for the rest to test the deck. Picked up 9 more copies last night. In my first trial run for the deck, my friend seated opposite me was pondering how I'd try to kill Gamekeeper and whether he could stop me from killing it. Our other opponent then immediately triggered his own commander: Zoyowa Lava-Tongue. So I didn't need to kill Gamekeeper. Well, I managed to make a 20/20 ooze on my next turn and to attack him on the turn after that, but he was a turn ahead of me and struck me down with his commander: Mm'menon, Uthros Exile. If I hadn't gotten a modest start against such a blitz from Mm'menon, I could have won.

After playing a couple of my other decks, I went back to this one for a five-player "Star" variant pod. After mulliganing away two three hands with Battlefield Scrounger and only two lands, I got off to a rough start. One of my opponents was running a deck helmed by Zidane, Tantalus Thief. Since he could steal a creatures and sac it every turn and all I could do was make one big ooze per turn, I was practically locked out of the game. I managed to hang on with Fog and Moment's Peace for long enough that the player to my left struck down both of his opponents.
 
Top