Felidar Guardian + Phyrexian Metamorph

Prerequisites

• You have enough mana to cast Phyrexian Metamorph.

Steps

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

Effects

• Infinite ETB
• Infinite LTB