Retreat to Coralhelm, Llanowar Scout, and Ghost Town

Prerequisites

• Retreat to Coralhelm on the battlefield
• Llanowar Scout on the battlefield
• Ghost Town in hand
• Llanowar Scout does not have summoning sickness
• It is not your turn

Steps

1. Activate Llanowar Scout by tapping it, putting Ghost Town from your hand onto the battlefield
2. Retreat to Coralhelm triggers, untapping Llanowar Scout
3. Activate Ghost Town by tapping it, adding
4. Activate Ghost town by paying , returning it to your hand
5. Repeat

Results

• Infinite colorless mana
• Infinite landfall triggers