Niblis of the Breath, Rings of Brighthearth, and Accomplished Alchemist

Prerequisites

• Niblis of the Breath on the battlefield
• Rings of Brighthearth on the battlefield
• Accomplished Alchemist on the battlefield

Steps

1. Activate Accomplished Alchemist's second ability by 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 Accomplished Alchemist
4. Resolve both Niblis abilities, untapping Niblis and Accomplished Alchemist
5. Repeat

Results

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