Felidar Guardian + Undercover Operative

Prerequisites

• You have enough mana to cast Undercover Operative.

Steps

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

Effects

• Infinite ETB
• Infinite LTB