Kodama of the East Tree, Chocobo Racetrack, and Dimir Aqueduct

Prerequisites

• Kodama of the East Tree on the battlefield
• Chocobo Racetrack on the battlefield
• Dimir Aqueduct in hand

Steps

1. Play Dimir Aqueduct
2. When Dimir Aqueduct enters the battlefield, it, Chocobo Racetrack, 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 Chocobo Racetrack 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 Chocobo Racetrack trigger
8. Repeat from step 4

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers
• Infinitely powerful Bird tokens you control until end of turn