Retreat to Coralhelm, Skyshroud Ranger, and Guildless Commons

Prerequisites

• Retreat to Coralhelm on the battlefield
• Skyshroud Ranger on the battlefield
• Guildless Commons in hand
• Skyshroud Ranger does not have summoning sickness

Steps

1. Activate Skyshroud Ranger by tapping it, putting Guildless Commons from your hand onto the battlefield
2. Guildless Commons enters the battlefield, triggering itself and Retreat to Coralhelm
3. Resolve the Guildless Commons trigger, returning itself from the battlefield to your hand
4. Resolve the Retreat to Coralhelm trigger, untapping Skyshroud Ranger
5. Repeat

Results

• Infinite landfall triggers