Felidar Guardian + Spark Double

WU identity

Commander legal

The 2 combo pieces

• Felidar Guardian
• Spark Double

How to execute it

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

What the combo produces

• Infinite creature LTB
• Infinite ETB