Leonardo, Sewer Samurai + Tatterkite + Carrion Feeder + Temur Battlecrier

Leonardo, Sewer Samurai

Tatterkite

Carrion Feeder

Temur Battlecrier

How it works

1. Cast Tatterkite from your graveyard by paying 0 due to Temur Battlecrier. It won't enter with a finality counter on it due to its static ability.
2. Activate Carrion Feeder by sacrificing Tatterkite.
3. Repeat.

This clever recursive loop transforms the graveyard into an engine by leveraging Leonardo, Sewer Samurai to repeatedly cast Tatterkite for free. Tatterkite is the absolute linchpin of the combo; its static ability prevents it from taking on the finality counters that Leonardo would normally impose, allowing it to return endlessly. Meanwhile, Temur Battlecrier scales down the casting cost to zero, and Carrion Feeder acts as the designated sacrifice outlet that fuels infinite creature sacrifices, death triggers, and a steadily growing pile of +1/+1 counters.