Leonardo, Sewer Samurai + Solemnity + Extruder + Memnite

Leonardo, Sewer Samurai

Solemnity

Extruder

Memnite

How it works

1. Activate Extruder by sacrificing Memnite.
2. Cast Memnite from your graveyard by paying 0. It will not enter with a finality counter on it due to Solemnity.
3. Repeat.

This clever loop uses Leonardo, Sewer Samurai to cast Memnite straight from your graveyard for zero mana, bypassing its usual limitations with Solemnity, which prevents finality counters from ever being placed on your creatures. Once Memnite is back on the battlefield, Extruder steps in by sacrificing it to fuel its ability, generating a continuous stream of sacrifice and death triggers while pumping up your board with endless +1/+1 counters. Because Solemnity also stops Extruder's sacrifice effect from putting counters on itself, the whole engine hums along indefinitely without choking on its own counters.