Aminatou, the Fateshifter + Doorkeeper Thrull + Spark Double + Wormfang Manta

WUB identity

Commander legal

The 4 combo pieces

• Aminatou, the Fateshifter
• Doorkeeper Thrull
• Spark Double
• Wormfang Manta

How to execute it

1. Activate Aminatou's second loyalty ability by removing a loyalty counter from it, blinking Wormfang Manta. Wormfang Manta's first ability won't trigger due to Doorkeeper Thrull
2. Wormfang Manta's second ability triggers, causing you to take an extra turn after this one.
3. Activate Spark Double's second loyalty ability by removing a loyalty counter from it, blinking Aminatou.
4. Activate Aminatou's second loyalty ability by removing a loyalty counter from it, blinking Spark Double. Choose to have Spark Double enter as a copy of Aminatou that isn't legendary.
5. Repeat each turn.

What the combo produces

• Infinite turns
• Lock