Slimefoot and Squee + Pitiless Plunderer + Sprouting Thrinax + Yahenni, Undying Partisan

Slimefoot and Squee

Pitiless Plunderer

Sprouting Thrinax

Yahenni, Undying Partisan

How it works

1. Activate Yahenni 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 Yahenni twice by sacrificing two Saprolings.
6. When the Saprolings die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
7. Resolve the Yahenni 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.