Exchange of Words, Wormfang Manta, Opalescence, and The Neutrinos

Prerequisites

• Exchange of Words in hand
• Wormfang Manta on the battlefield
• Opalescence on the battlefield
• The Neutrinos on the battlefield
• available

Steps

1. Cast Exchange of Words by paying
2. When Exchange of Words enters, it triggers, exchanging the text boxes of itself and Wormfang Manta
3. Declare The Neutrinos as an attacker, attacking a player who cannot kill it in combat
4. When The Neutrinos attacks, it triggers, exiling and returning (tapped and attacking) Exchange of Words
5. When Exchange of Words leaves the battlefield, its ability from Wormfang Manta's textbox triggers, causing you to take an extra turn after this one
6. When Exchange of Words enters, it triggers, exchanging the text boxes of itself and Wormfang Manta
7. Repeat from step 3 each turn

Results

• Infinite turns
• Lock