Tenacious Dead + Pitiless Plunderer + Altar of Dementia + Fumulus, the Infestation

Tenacious Dead

Pitiless Plunderer

Altar of Dementia

Fumulus, the Infestation

How it works

1. Activate Altar of Dementia 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 Altar of Dementia by sacrificing the creature token.
6. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
7. Resolve the Altar of Dementia 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 Altar of Dementia ability from step 1.
11. Repeat.