Felidar Guardian + Vesuvan Shapeshifter

Felidar Guardian

Vesuvan Shapeshifter

How it works

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