Prowling Geistcatcher + Slimefoot and Squee + Phyrexian Altar

Prowling Geistcatcher

Slimefoot and Squee

Phyrexian Altar

How it works

1. Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding .
2. When Slimefoot and Squee dies, Prowling Geistcatcher's first ability triggers, exiling Slimefoot and Squee from your graveyard.
3. Activate Phyrexian Altar by sacrificing Prowling Geistcatcher, adding .
4. When Prowling Geistcatcher dies, its second ability triggers, returning Slimefoot and Squee from exile to the battlefield.
5. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
6. Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding .
7. Activate Slimefoot and Squee by paying 1 and sacrificing a Saproling, returning Slimefoot and Squee and Prowling Geistcatcher from your graveyard to the battlefield.
8. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
9. Activate Phyrexian Altar by sacrificing the Saproling, adding 1.
10. Repeat.