Mortuary + Thermopod + Crimson Kobolds + Bolas's Citadel

Mortuary

Thermopod

Crimson Kobolds

Bolas's Citadel

How it works

1. Activate Thermopod by sacrificing Crimson Kobolds
2. When Crimson Kobolds dies, Mortuary triggers, putting Crimson Kobolds from your graveyard onto the top of your library.
3. Cast Crimson Kobolds from the top of your library by paying 0 life.
4. Repeat.

This ingenious loop transforms a harmless, mana-free creature into a boundless engine of destruction by turning the top of your library into an endless revolving door. Thanks to Bolas's Citadel, you can continually cast Crimson Kobolds from the top of your library for zero mana and zero life, paying its negligible cost while ignoring traditional resource limits. Once sacrificed to Thermopod to generate red mana and fuel the combo, Mortuary immediately catches the creature as it hits the graveyard, neatly placing it back on top of your library to restart the cycle.