Toph, the First Metalbender, Master Transmuter, Retreat to Coralhelm, and Sceptre of Eternal Glory

Prerequisites

• Toph, the First Metalbender on the battlefield
• Master Transmuter on the battlefield
• Retreat to Coralhelm on the battlefield
• Sceptre of Eternal Glory on the battlefield

Steps

1. Activate Sceptre of Eternal Glory by tapping it, adding Activate Master Transmuter by paying , tapping it and returning Sceptre of Eternal Glory from the battlefield to your hand, putting Sceptre of Eternal Glory onto the battlefield
2. When Sceptre of Eternal Glory enters, Retreat to Coralhelm triggers, as Sceptre of Eternal Glory is a land due to Toph, untapping Master Transmuter
3. Repeat

Results

• Infinite colored mana
• Infinite landfall triggers