Leonardo, Sewer Samurai + Solemnity + Thermopod + Crimson Kobolds

Leonardo, Sewer Samurai

Solemnity

Thermopod

Crimson Kobolds

How it works

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

This clever loop centers around Leonardo, Sewer Samurai, whose ability allows you to repeatedly cast Crimson Kobolds straight from your graveyard thanks to their zero mana cost. Normally, the finality counter imposed by Leonardo would exile the Kobolds the moment they die, but Solemnity steps in to effortlessly shut down all counter placement on your permanents. This allows Thermopod to continuously sacrifice the returning Kobolds for red mana without ever losing your loop, generating infinite sacrifices, death triggers, and red mana to fuel the rest of your turn.