Leonardo, Sewer Samurai + Solemnity + Thermopod + Kobolds of Kher Keep

Leonardo, Sewer Samurai

Solemnity

Thermopod

Kobolds of Kher Keep

How it works

1. Activate Thermopod by sacrificing Kobolds of Kher Keep.
2. Cast Kobolds of Kher Keep 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 Solemnity to completely bypass the downside of Leonardo, Sewer Samurai, ensuring that when you cast Kobolds of Kher Keep from your graveyard, it enters without a finality counter. Once the tiny creature hits the board, you immediately feed it to Thermopod to generate red mana and fuel the recursion all over again. Because Solemnity prevents any counters from ever landing on your creatures, you can repeat this process an infinite number of times.