Retreat to Coralhelm, Storm Cauldron, and Sakura-Tribe Scout

Prerequisites

• Retreat to Coralhelm on the battlefield
• Storm Cauldron on the battlefield
• Sakura-Tribe Scout on the battlefield

Steps

1. Activate Sakura-Tribe Scout by tapping it, putting a basic land from your hand onto the battlefield
2. When the land enters the battlefield, Retreat to Coralhelm triggers, untapping Sakura-Tribe Scout
3. Activate the basic land by tapping it, adding
4. Storm Cauldron triggers, returning the basic land from your battlefield to your hand
5. Repeat

Results

• Infinite landfall triggers
• Infinite mana basic lands you control can produce