Marina Vendrell, Aura of Dominion, Spiked Corridor // Torture Pit, and Ashnod's Altar

Prerequisites

• Marina Vendrell on the battlefield
• Aura of Dominion on the battlefield
• Spiked Corridor // Torture Pit on the battlefield
• Ashnod's Altar on the battlefield
• Marina does not have summoning sickness
• Spiked Corridor is locked
• available

Steps

1. Activate Marina by tapping it, unlocking Spiked Corridor
2. Spiked Corridor triggers, creating three 1/1 Devil creature tokens
3. Activate Aura of Dominion by paying and tapping a Devil, untapping Marina
4. Activate Marina by tapping it, locking Spiked Corridor
5. Activate Ashnod's Altar by sacrificing the tapped Devil, adding
6. When the Devil dies, it triggers, dealing 1 damage to any target
7. Activate Aura of Dominion by paying and tapping a Devil, untapping Marina
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite damage
• Infinite creature tokens
• Infinite unlocking of Rooms you control