Retreat to Coralhelm, Scaled Herbalist, and Simic Growth Chamber

Prerequisites

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

Steps

1. Activate Scaled Herbalist 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 Scaled Herbalist
5. Repeat

Results

• Infinite landfall triggers