Niblis of the Breath, Rings of Brighthearth, and Selvala, Heart of the Wilds

Prerequisites

• Niblis of the Breath on the battlefield
• Rings of Brighthearth on the battlefield
• Selvala, Heart of the Wilds on the battlefield
• available

Steps

1. Activate Selvala by paying and tapping it, adding at least
2. Activate Niblis by paying and tapping it, targeting itself
3. Rings of Brighthearth triggers, causing you to pay to copy Niblis' ability, targeting Selvala
4. Resolve both Niblis abilities, untapping Niblis and Selvala
5. Repeat

Results

• Infinite colored mana
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control