Slimefoot and Squee + Pitiless Plunderer + Sprouting Thrinax + Altar of Dementia

Slimefoot and Squee

Pitiless Plunderer

Sprouting Thrinax

Altar of Dementia

How it works

1. Activate Altar of Dementia twice by sacrificing Sporuting Thrinax and Slimefoot and Squee.
2. When Slimefoot and Squee and Sprouting Thrinax die, Pitiless Plunderer triggers twice and Sprouting Thrinax triggers once.
3. Resolve the Pitiless Plunderer triggers, creating two Treasure artifact tokens.
4. Resolve the Sprouting Thrinax trigger, creating three 1/1 Saproling creature tokens.
5. Activate Altar of Dementia twice by sacrificing two Saprolings.
6. When the Saprolings die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
7. Resolve the Altar of Dementia abilities from steps 1 and 5.
8. Activate the Treasures by tapping and sacrificing them, adding 1.
9. Activate Slimefoot and Squee by paying 1 and sacrificing a Saproling.
10. When the Saproling dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
11. Resolve the Slimefoot and Squee ability, returning it and Sprouting Thrinax from your graveyard to the battlefield.
12. When Slimefoot and Squee enter the battlefield, it triggers, creating a 1/1 Saproling creature token.
13. Repeat.