Adarkar Valkyrie, Thornbite Staff, and Thermopod

Prerequisites

• Adarkar Valkyrie on the battlefield
• Thornbite Staff on the battlefield
• Thermopod on the battlefield
• Adarkar Valkyrie does not have summoning sickness

Steps

1. Activate Adarkar Valkyrie by tapping it, targeting Thermopod Activate Thermopod's second ability by sacrificing it, adding
2. When Thermopod dies, Adarkar Valkyrie triggers twice
3. Resolve the first trigger, untapping Adarkar Valkyrie
4. Resolve the second trigger, returning Thermopod from your graveyard to the battlefield
5. Repeat

Results

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