Tenacious Dead + Pitiless Plunderer + Umbral Collar Zealot + Fumulus, the Infestation

Tenacious Dead

Pitiless Plunderer

Umbral Collar Zealot

Fumulus, the Infestation

How it works

1. Activate Umbral Collar Zealot by sacrificing Tenacious Dead.
2. When Tenacious Dead dies, it, Fumulus, and Pitiless Plunderer trigger.
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
4. Resolve the Fumulus trigger, creating a creature token.
5. In response to the remaining trigger, activate Umbral Collar Zealot by sacrificing the creature token.
6. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
7. Resolve the Umbral Collar Zealot ability from step 5.
8. Activate two Treasure tokens by tapping and sacrificing them, adding .
9. Resolve the Tenacious Dead trigger, paying 1 to return it to the battlefield from your graveyard.
10. Resolve the Umbral Collar Zealot ability from step 1.
11. Repeat.