Toph, the First Metalbender, Candelabra of Tawnos, and Serra's Sanctum

Prerequisites

• Toph, the First Metalbender on the battlefield
• Candelabra of Tawnos on the battlefield
• Serra's Sanctum on the battlefield

Steps

1. Activate Serra's Sanctum by tapping it, adding for each enchantment you control
2. Activate Candelabra of Tawnos by paying and tapping it, untapping Serra's Sanctum and Candelabra of Tawnos as it is a land due to Toph
3. Repeat

Results

• Infinite mana lands you control can produce
• Infinite untap of lands you control
• Infinite white mana
• Infinite untap of nontoken artifacts you control
• Infinite mana nontoken artifacts you control can produce