Mikaeus, the Unhallowed, Thermopod, and Dream Seizer

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Thermopod on the battlefield
• Dream Seizer on the battlefield

Steps

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

Results

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