Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Luminous Broodmoth + Altar of Dementia

Prerequisites

• You control another nontoken creature with base toughness 2 or greater that does not have flying.

Steps

1. 1Activate Altar of Dementia by sacrificing another nontoken creature that doesn't have flying.
2. 2When the creature dies, Luminous Broodmoth triggers, returning the creature from your graveyard to the battlefield with a flying counter on it.
3. 3Activate Altar of Dementia by sacrificing the creature with a flying counter on it.
4. 4When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. 5Resolve the Altar of Dementia abilities from step 1 and 3.
6. 6Repeat.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill