Kodama of the East Tree + Dimir Aqueduct + Zendikar's Roil

Kodama of the East Tree

Dimir Aqueduct

Zendikar's Roil

How it works

1. Play Dimir Aqueduct.
2. When Dimir Aqueduct enters the battlefield, it, Zendikar's Roil, and Kodama of the East Tree trigger.
3. Resolve the Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
4. Resolve the Dimir Aqueduct trigger, returning it from the battlefield to your hand.
5. Resolve the Zendikar's Roil trigger, creating a token.
6. When the token enters the battlefield, Kodama triggers, putting Dimir Aqueduct from your hand onto the battlefield.
7. When Dimir Aqueduct enters the battlefield, it and Zendikar's Roil trigger.
8. Repeat from step 4.

This clever loop transforms the self-bouncing drawback of Dimir Aqueduct into an engine by letting Kodama of the East Tree and Zendikar's Roil feed off each other in an infinite cycle. Every time the land enters the battlefield, Zendikar's Roil rewards your landfall trigger by spawning an Elemental token. That token's entry then triggers Kodama of the East Tree, allowing you to seamlessly slide the returned Dimir Aqueduct right back onto the battlefield from your hand to repeat the process.