Ebondeath, Dracolich + Rooftop Storm + Yahenni, Undying Partisan

Ebondeath, Dracolich

Rooftop Storm

Yahenni, Undying Partisan

How it works

1. Cast Ebondeath from your graveyard by paying 0.
2. Activate Yahenni by sacrificing Ebondeath, giving it indestructible until end of turn.
3. Repeat.

This ingenious loop turns the graveyard into a personal revolving door, anchored by the massive cost reduction of Rooftop Storm that lets you cast Zombie creature spells for free. You simply cast Ebondeath, Dracolich straight from your graveyard for zero mana, immediately funneling it into Yahenni, Undying Partisan's sacrifice ability to protect Yahenni and send the Dracolich right back to the yard. Because Ebondeath's permission checks only that *a* creature died (and specifies one not named Ebondeath, Dracolich), sacrificing the Dracolich itself continuously satisfies the condition to bring it back again.