Llanowar Scout, Arid Archway, and Elven Raft-Steerer

Prerequisites

• Llanowar Scout on the battlefield
• Arid Archway in hand
• Elven Raft-Steerer on the battlefield

Steps

1. Activate Llanowar Scout by tapping it, putting Arid Archway from your hand onto the battlefield
2. When Arid Archway enters the battlefield, it and Elven Raft-Steerer trigger
3. Resolve the Arid Archway trigger, returning itself from the battlefield to your hand
4. Resolve the Elven Raft-Steerer trigger, untapping Llanowar Scout
5. Repeat

Results

• Infinite landfall triggers