Retreat to Coralhelm + Orzhov Basilica + PuPu UFO

Prerequisites

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Steps

1. 1Activate PuPu UFO by tapping it, putting Orzhov Basilica from your hand onto the battlefield.
2. 2When Orzhov Basilica enters the battlefield, it and Retreat to Coralhelm trigger.
3. 3Resolve the Orzhov Basilica 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