Retreat to Coralhelm, Oboro, Palace in the Clouds, and Skyshroud Ranger

Prerequisites

• Retreat to Coralhelm on the battlefield
• Oboro, Palace in the Clouds in hand
• Skyshroud Ranger on the battlefield

Steps

1. Activate Skyshroud Ranger by tapping it, putting Oboro from your hand onto the battlefield
2. When Oboro enters the battlefield, Retreat to Coralhelm triggers, untapping Skyshroud Ranger
3. Activate Oboro's first ability by tapping it, adding
4. Activate Oboro's second ability by paying , returning it from the battlefield to your hand
5. Repeat

Results

• Infinite landfall triggers