Retreat to Coralhelm + Izzet Boilerworks + PuPu UFO

Prerequisites

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Steps

1. 1Activate PuPu UFO by tapping it, putting Izzet Boilerworks from your hand onto the battlefield.
2. 2When Izzet Boilerworks enters the battlefield, it and Retreat to Coralhelm trigger.
3. 3Resolve the Izzet Boilerworks trigger, returning itself from the battlefield to your hand.
4. 4Resolve the Retreat to Coralhelm trigger, untapping PuPu UFO.
5. 5Repeat.

Effects

• Infinite landfall triggers