Marina Vendrell, Thornbite Staff, Spiked Corridor // Torture Pit, and Thermopod

Prerequisites

• Marina Vendrell on the battlefield
• Thornbite Staff on the battlefield
• Spiked Corridor // Torture Pit on the battlefield
• Thermopod on the battlefield
• Marina does not have summoning sickness
• Thornbite Staff attached to Marina
• Spiked Corridor is locked

Steps

1. Activate Marina by tapping it, unlocked Spiked Corridor
2. Spiked Corridor triggers, creating three 1/1 Devil creature tokens
3. Activate Thermopod's second ability by sacrificing a Devil, adding
4. When the Devil dies, it and Marina trigger
5. Resolve the Devil's trigger, dealing 1 damage to any target
6. Resolve the Marina trigger, untapping it
7. Activate Marina by tapping it, locking Spiked Corridor
8. Repeat steps 3 through 6 one additional time
9. Repeat from step 1

Results

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