Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Altar of Dementia, and Darksteel Angel

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Altar of Dementia on the battlefield
• Darksteel Angel on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Darksteel Angel When Darksteel Angel dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its static effect
2. Resolve the Altar of Dementia ability, causing a player to mill a number of cards equal to the sacrificed creature's power Repeat

Results

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