Mortuary + Bolas's Citadel + Bartolomé del Presidio + Kobolds of Kher Keep

Mortuary

Bolas's Citadel

Bartolomé del Presidio

Kobolds of Kher Keep

How it works

1. Activate Bartolomé del Presidio by sacrificing Kobolds of Kher Keep
2. When Kobolds of Kher Keep dies, Mortuary triggers, putting Kobolds of Kher Keep from your graveyard onto the top of your library.
3. Resolve the Bartolomé del Presidio ability.
4. Cast Kobolds of Kher Keep from the top of your library by paying 0 life.
5. Repeat.

This loop is a masterclass in turning free resources into an engine of endless iteration, fueled entirely by the clever synergy of your permanents. Bartolomé del Presidio serves as the sac outlet that puts Kobolds of Kher Keep into the graveyard, while Mortuary immediately intercepts that death by cycling the Kobolds right back to the top of your library. From there, Bolas's Citadel allows you to play the Kobolds directly off the top of your library for zero life, resetting the entire cycle without costing you a single resource.