Retreat to Coralhelm, Walking Atlas, and Simic Growth Chamber

Prerequisites

• Retreat to Coralhelm on the battlefield
• Walking Atlas on the battlefield
• Simic Growth Chamber in hand
• Walking Atlas does not have summoning sickness

Steps

1. Activate Walking Atlas by tapping it, putting Simic Growth Chamber from your hand onto the battlefield
2. Simic Growth Chamber enters the battlefield, triggering itself and Retreat to Coralhelm
3. Resolve the Simic Growth Chamber trigger, returning itself from the battlefield to your hand
4. Resolve the Retreat to Coralhelm trigger, untapping Walking Atlas
5. Repeat

Results

• Infinite landfall triggers