Thermopod, Kithkin Spellduster, and Thran Vigil

Prerequisites

• Thermopod on the battlefield
• Kithkin Spellduster on the battlefield
• Thran Vigil on the battlefield

Steps

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

Results

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