Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Thermopod, and White Widow, Free Agent

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Thermopod on the battlefield
• White Widow, Free Agent on the battlefield

Steps

1. Activate Thermopod by sacrificing White Widow
2. When White Widow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When White Widow enters, it triggers, putting a +1/+1 counter on it and up to one other creature
4. Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite red mana
• Infinite sacrifice triggers