Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Ashnod's Altar, and Drakestown Forgotten

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Ashnod's Altar on the battlefield
• Drakestown Forgotten on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Drakestown Forgotten
2. When Drakestown Forgotten dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite sacrifice triggers