Retreat to Coralhelm + Scaled Herbalist + Arid Archway

Prerequisites

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Steps

1. 1Activate Scaled Herbalist by tapping it, putting Arid Archway from your hand onto the battlefield.
2. 2When Arid Archway enters the battlefield, it and Retreat to Coralhelm trigger.
3. 3Resolve the Arid Archway trigger, returning itself from the battlefield to your hand.
4. 4Resolve the Retreat to Coralhelm trigger, untapping Scaled Herbalist.
5. 5Repeat.

Effects

• Infinite landfall triggers