Leonardo, Sewer Samurai + Solemnity + Krark-Clan Grunt + Memnite

Leonardo, Sewer Samurai

Solemnity

Krark-Clan Grunt

Memnite

How it works

1. Activate Krark-Clan Grunt 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 relies on Leonardo, Sewer Samurai's ability to let you recast low-power creatures from your graveyard, turning Memnite into a recurring sacrifice fuel for Krark-Clan Grunt. Normally, casting Memnite this way would brand it with a finality counter and exile it upon death, but Solemnity acts as an absolute shield to prevent any counters from ever being placed on your permanents. Without that restriction, Memnite slips right back into the graveyard every time it hits the bin, letting you infinitely repeat the cycle to pump up the Grunt's power while generating an endless stream of artifact sacrifices and death triggers.