Selvala, Heart of the Wilds + Slimefoot and Squee + Altar of Dementia + Frostcliff Siege

Selvala, Heart of the Wilds

Slimefoot and Squee

Altar of Dementia

Frostcliff Siege

How it works

1. Activate Selvala by paying and tapping it, adding at least 1.
2. Activate Altar of Dementia twice by sacrificing Selvala and Slimefoot and Squee.
3. Activate Slimefoot and Squee by paying 1 and sacrificing a Saproling, returning it and Selvala from your graveyard to the battlefield.
4. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
5. Repeat.

This intricate loop relies on Slimefoot and Squee acting as our persistent engine, using its activated ability to constantly recur itself and Selvala, Heart of the Wilds from the graveyard by paying the mana we generate and sacrificing a freshly spawned Saproling token. Altar of Dementia ensures that every sacrifice isn't just fuel, but a weapon that mills our opponents out completely while sending any extra cards to our graveyard. Meanwhile, Frostcliff Siege pumps up our board and grants trample and haste, rounding out the strategy with aggressive pressure whenever we aren't busy churning through our loop.