Retreat to Coralhelm, Sakura-Tribe Scout, and Gruul Turf

Prerequisites

• Retreat to Coralhelm on the battlefield
• Sakura-Tribe Scout on the battlefield
• Gruul Turf in hand
• Sakura-Tribe Scout does not have summoning sickness

Steps

1. Activate Sakura-Tribe Scout by tapping it, putting Gruul Turf from your hand onto the battlefield
2. Gruul Turf enters the battlefield, triggering itself and Retreat to Coralhelm
3. Resolve the Gruul Turf trigger, returning itself from the battlefield to your hand
4. Resolve the Retreat to Coralhelm trigger, untapping Sakura-Tribe Scout
5. Repeat

Results

• Infinite landfall triggers