Wormfang Manta, Erratic Portal, and Tocatli Honor Guard

Prerequisites

• Wormfang Manta on the battlefield
• Erratic Portal on the battlefield
• Tocatli Honor Guard on the battlefield
• each turn available

Steps

1. Activate Erratic Portal by paying and tapping it, returning Wormfang Manta from the battlefield to your hand
2. Wormfang Manta leaves the battlefield, triggering its first ability, causing you to take an extra turn after this one
3. Cast Wormfang Manta by paying
4. Wormfang Manta enters the battlefield, but its first ability does not trigger due to Tocatli Honor Guard
5. Repeat each turn

Results

• Infinite turns