Felidar Guardian + Vesuvan Shapeshifter

Prerequisites

• You have enough mana to cast Vesuvan Shapeshifter.

Steps

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

Effects

• Infinite creature ETB
• Infinite creature LTB