Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Mighty Mutanimals, and Thermopod

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Mighty Mutanimals on the battlefield
• Thermopod on the battlefield

Steps

1. Activate Thermopod by sacrificing it, adding
2. When Thermopod dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Thermopod enters, Mighty Mutanimals triggers, putting a +1/+1 counter on Thermopod
4. Repeat

Results

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