Wormfang Manta, Gossip's Talent, and Karn, Argent Defender

Prerequisites

• Wormfang Manta on the battlefield
• Gossip's Talent on the battlefield
• Karn, Argent Defender on the battlefield

Steps

1. Declare the creature you wish to blink as an attacker, attacking an opponent that cannot block it
2. When that creature deals damage, Gossip's Talent's last ability triggers, blinking Wormfang Manta
3. When Wormfang Manta leaves the battlefield, its second ability triggers, causing you to take an extra turn after this one
4. Wormfang Manta entering does not cause its abillity to trigger due to Karn
5. Repeat each turn

Results

• Infinite turns
• Lock