Exchange of Words, Starfield of Nyx, Wormfang Manta, and Deadeye Navigator

Prerequisites

• Exchange of Words in hand
• Starfield of Nyx on the battlefield
• Wormfang Manta on the battlefield
• Deadeye Navigator on the battlefield
• undefined the first turn with each extra turn available

Steps

1. Cast Exchange of Words by paying
2. When Exchange of Words enters the battlefield, it and Deadeye Navigator's soulbond ability trigger
3. Resolve the Exchange of Words trigger, exchanging the text boxes of it and Wormfang Manta
4. Resolve the Deadeye Navigator trigger, pairing it and Exchange of Words
5. Activate Exchange of Words by paying , blinking it
6. Exchange of Words leaves and enters the battlefield, triggering the second ability it gained from Wormfang Manta's textbox as well as its own ability and Deadeye Navigator's soulbond ability
7. Resolve the first Exchange of Words trigger, causing you to take an extra turn after this one
8. Resolve the second Exchange of Words trigger, exchanging the text boxes of it and Wormfang Manta
9. Resolve the Deadeye Navigator trigger, repairing it and Exchange of Words
10. Repeat from step 5 during each turn

Results

• Infinite turns