Scaretiller, Retreat to Coralhelm, Oboro, Palace in the Clouds, and Paradise Mantle

Prerequisites

• Scaretiller on the battlefield
• Retreat to Coralhelm on the battlefield
• Oboro, Palace in the Clouds in hand
• Paradise Mantle on the battlefield
• Paradise Mantle attached to Scaretiller
• Scaretiller does not have summoning sickness

Steps

1. Activate Scaretiller's ability from Paradise Mantle by tapping Scaretiller, adding one mana of any color
2. Scaretiller triggers, putting Oboro from your hand onto the battlefield tapped
3. Oboro enters the battlefield, triggering Retreat to Coralhelm, untapping Scaretiller
4. Activate Oboro's second ability by paying , returning it from the battlefield to your hand
5. Repeat

Results

• Infinite landfall triggers