Mortuary + Memnite + Bolas's Citadel + Arcbound Ravager

Mortuary

Memnite

Bolas's Citadel

Arcbound Ravager

How it works

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

This ingenious loop transforms free artifacts into an endless engine for sacrifice and spellcasting. With Bolas's Citadel allowing you to play the top card of your library by paying life instead of mana, Memnite can be cast repeatedly for zero life. Each time you sacrifice Memnite to Arcbound Ravager's activation, Mortuary steps in to instantly recycle the creature by placing it right back on top of your library. Because Memnite costs zero life to recast through Bolas's Citadel, the entire loop sustains itself effortlessly, letting you pile infinite counters onto Arcbound Ravager or generate an arbitrarily large storm count.