Thermopod, Feign Death, and Dualcaster Mage

Prerequisites

• Thermopod on the battlefield
• Feign Death in hand
• Dualcaster Mage in hand
• available

Steps

1. Cast Feign Death by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost
3. When Dualcaster Mage enters, it triggers, copying Feign Death, with the copy targeting Dualcaster Mage
4. Resolve the copy of Feign Death
5. Holding priority, activate Thermopod by sacrificing Dualcaster Mage
6. When Dualcaster Mage dies, it triggers, returning it from your graveyard to the battlefield
7. Repeat from step 3

Results

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