Retreat to Coralhelm + Murasa Rootgrazer + Trench Behemoth

Prerequisites

• You control at least one basic land.
• Murasa Rootgrazer does not have summoning sickness.

Steps

1. 1Activate a basic land you control by tapping it, adding at least .
2. 2Activate Trench Behemoth by returning the basic land from the battlefield to your hand, untapping Trench Behemoth.
3. 3Activate Murasa Rootgrazer's first ability by tapping it, putting the basic land from your hand onto the battlefield.
4. 4The land enters the battlefield, triggering Retreat to Coralhelm, untapping Murasa Rootgrazer.
5. 5Repeat.

Effects

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