Kodama of the East Tree + Ghost Town + Zendikar's Roil + Mountain Valley

Kodama of the East Tree

Ghost Town

Zendikar's Roil

Mountain Valley

How it works

1. Fetch a land using Mountain Valley.
2. When the fetched land enters, Zendikar's Roil and Kodama trigger.
3. Resolve the Kodama trigger, putting Ghost Town from your hand onto the battlefield.
4. When Ghost Town enters, Kodama and Zendikar's Roil trigger.
5. Holding priority, activate Ghost Town's first abiltiy by tapping it, adding C.
6. Activate Ghost Town's second ability by paying 0, returning it from the battlefield to your hand.
7. Resolve the Zendikar's Roil from step 4, creating a token.
8. When the token enters, Kodama triggers, putting Ghost Town from your hand onto the battlefield.
9. When Ghost Town enters, Zendikar's Roil triggers.
10. Repeat from step 5.