Retreat to Coralhelm + Guildless Commons + PuPu UFO

Prerequisites

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Steps

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