Evil Twin + Felidar Guardian

WUB identity

Commander legal

The 2 combo pieces

• Evil Twin
• Felidar Guardian

How to execute it

1. Cast Evil Twin by paying its mana cost, choosing to have it enter the battlefield as a copy of Felidar Guardian
2. When Evil Twin enters the battlefield, it triggers, blinking Felidar Guardian.
3. When Felidar Guardian enters the battlefield, it triggers, blinking Evil Twin. Choose to have Evil Twin enter the battlefield as a copy of Felidar Guardian.
4. Repeat from step 2.

What the combo produces

• Infinite creature LTB
• Infinite ETB