Rings of Brighthearth, Deserted Temple, and Storm the Vault // Vault of Catlacan

Prerequisites

• Rings of Brighthearth on the battlefield
• Deserted Temple on the battlefield
• Storm the Vault // Vault of Catlacan on the battlefield

Steps

1. Activate Vault of Catlacan by tapping it, adding at least Activate Deserted Temple's second ability by paying and tapping it, targeting Vault of Catlacan
2. Rings of Brighthearth triggers, causing you to pay to copy Deserted Temple's ability, targeting Deserted Temple
3. Resolve both Deserted Temple abilities, untapping Deserted Temple and Vault of Catlacan Repeat

Results

• Infinite blue mana
• Infinite mana lands you control can produce
• Infinite untap of lands you control