Rings of Brighthearth, Deserted Temple, and Evendo, Waking Haven

Prerequisites

• Rings of Brighthearth on the battlefield
• Deserted Temple on the battlefield
• Evendo, Waking Haven on the battlefield
• available

Steps

1. Activate Evendo, Waking Haven by paying and tapping it, adding at least Activate Deserted Temple's second ability by paying and tapping it, targeting Evendo, Waking Haven
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 Evendo, Waking Haven Repeat

Results

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