Rotlung Reanimator + Umbral Collar Zealot + Xenograft

Rotlung Reanimator

Umbral Collar Zealot

Xenograft

How it works

1. Activate Umbral Collar Zealot by sacrificing any other creature.
2. When the creature dies as a Cleric due to Xenograft, Rotlung Reanimator triggers, creating a 2/2 Zombie creature token.
3. Resolve the Umbral Collar Zealot ability.
4. Repeat.

This loop transforms any disposable body into an endless engine of sacrifice and rebirth by weaving three distinct mechanical threads together. Xenograft acts as the foundational architect here, stamping every creature you control with the Cleric type so that Rotlung Reanimator's trigger condition is met by *anything* that perishes. Once that identity shift is locked in, Umbral Collar Zealot provides the sacrificial outlet to feed the engine, instantly replacing the fallen creature with a fresh 2/2 Zombie token courtesy of Rotlung Reanimator's triggered ability. Because you can immediately sacrifice that newly minted Zombie to Umbral Collar Zealot again, the cycle perpetuates itself indefinitely—surveiling your library down to your exact needs while generating boundless death, sacrifice, and entry triggers.