Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot + Stormbound Geist

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Umbral Collar Zealot

Stormbound Geist

How it works

1. Activate Umbral Collar Zealot by sacrificing Stormbound Geist
2. When Stormbound Geist dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Umbral Collar Zealot by sacrificing Stormbound Geist
4. When Stormbound Geist dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve both Umbral Collar Zealot abilities from step 1 and 3.
6. Repeat.

This clever loop turns the back-and-forth between **Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight** and its resident spirits into an infinite engine of sacrifice and rebirth. While **Umbral Collar Zealot** acts as the tireless sacrifice outlet that keeps the machinery moving and lets you sculpt your draws via surveil, **Isilu, Carrier of Twilight** (the back face of Eirdu) provides the crucial persist mechanic. Working in tandem with **Stormbound Geist**'s native undying ability, the counters perpetually cancel each other out upon return. As the Geist bounces endlessly between the graveyard and the battlefield, you generate an unbounded cascade of entry, exit, death, and sacrifice triggers to overwhelm the board.