Beifong's Bounty Hunters + Altar of Dementia + Fumulus, the Infestation

Beifong's Bounty Hunters

Altar of Dementia

Fumulus, the Infestation

How it works

1. Activate Altar of Dementia by sacrificing another nonland creature.
2. When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land you control.
3. Resolve the Altar of Dementia ability.
4. Activate Altar of Dementia by sacrificing the earthbent land.
5. When the land dies, Fumulus and Beifong's Bounty Hunters trigger.
6. Resolve the Beifong's Bounty Hunters trigger, returning the land from your graveyard to the battlefield.
7. Resolve the Fumulus trigger, creating a creature token.
8. Resolve the Altar of Dementia ability.
9. Repeat.