Mortuary + Sarcatog + Memnite + Bolas's Citadel

Mortuary

Sarcatog

Memnite

Bolas's Citadel

How it works

1. Activate Sarcatog by sacrificing Memnite
2. When Memnite dies, Mortuary triggers, putting Memnite from your graveyard onto the top of your library.
3. Resolve the Sarcatog ability.
4. Cast Memnite from the top of your library by paying 0 life.
5. Repeat.

This clever loop turns zero-mana creatures into an engine of endless iteration by using Bolas's Citadel to bypass standard casting costs, letting you cast cards directly from the top of your library for a negligible life total. Whenever you sacrifice Memnite to fuel Sarcatog's ability, Mortuary immediately catches the creature heading to the graveyard and redirects it straight back to the top of your library. Because Bolas's Citadel grants you permission to play from that exact top spot, Memnite becomes a perpetual-motion machine that endlessly triggers your death counts, storm tallies, and sacrifice effects while pumping Sarcatog to astronomical proportions.