Metamorphosis Fanatic + Felidar Guardian + Phantom Train

Metamorphosis Fanatic

Felidar Guardian

Phantom Train

How it works

1. Cast Felidar Guardian by paying its mana cost.
2. When Felidar Guardian enters the battlefield, it triggers, targeting Metamorphosis Fanatic.
3. Holding priority, activate Phantom Train by sacrificing Felidar Guardian.
4. Resolve the Felidar Guardian ability, blinking Metamorphosis Fanatic.
5. When Metamorphosis Fanatic enters the battlefield, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
6. Repeat from step 2.