Niblis of the Breath, Rings of Brighthearth, and Sanctum Weaver

Prerequisites

• Niblis of the Breath on the battlefield
• Rings of Brighthearth on the battlefield
• Sanctum Weaver on the battlefield
• You control at least four enchantments
• Sanctum Weaver and Niblis do not have summoning sickness

Steps

1. Activate Sanctum Weaver 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 Sanctum Weaver
4. Resolve both Niblis abilities, untapping Niblis and Sanctum Weaver
5. Repeat

Results

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