Athreos, Shroud-Veiled + Altar of Dementia + Reluctant Role Model

Athreos, Shroud-Veiled

Altar of Dementia

Reluctant Role Model

How it works

1. Activate Altar of Dementia by sacrificing the creature with a coin counter on it.
2. When the creature dies, Athreos's second ability and Reluctant Role Model's second ability trigger.
3. Resolve the Athreos trigger, returning the creature from your graveyard to the battlefield.
4. Resolve the Reluctant Role Model trigger, putting a coin counter on it if it wasn't the creature that was sacrificed, or another nontoken creature you control otherwise.
5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
6. Repeat.