Felidar Guardian + Synth Infiltrator

WU identity

Commander legal

The 2 combo pieces

• Felidar Guardian
• Synth Infiltrator

How to execute it

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

What the combo produces

• Infinite creature LTB
• Infinite ETB