Mortuary + Viscera Seer + Bolas's Citadel + Kobolds of Kher Keep

Mortuary

Viscera Seer

Bolas's Citadel

Kobolds of Kher Keep

How it works

1. Activate Viscera Seer 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 Viscera Seer ability.
4. Cast Kobolds of Kher Keep from the top of your library by paying 0 life.
5. Repeat.

This elegant loop turns free mana-value-zero creatures into an infinite engine for storm and death triggers. By leveraging Bolas's Citadel, you bypass traditional mana costs entirely to cast spells directly from the top of your library, paying life instead—a cost entirely negated here since Kobolds of Kher Keep has a mana value of zero. Whenever you sacrifice that tiny creature to Viscera Seer, Mortuary steps in to intercept it from the graveyard and neatly place it back on top of your library, ready to be cast all over again.