Rings of Brighthearth, Minamo, School at Water's Edge, and Chromatic Orrery

Prerequisites

• Rings of Brighthearth on the battlefield
• Minamo, School at Water's Edge on the battlefield
• Chromatic Orrery on the battlefield

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Activate Minamo's second ability by paying and tapping it, targeting itself
3. Rings of Brighthearth triggers, causing you to pay to copy Minamo's ability, targeting Chromatic Orrery
4. Resolve both Minamo abilities, untapping it and Chromatic Orrery
5. Repeat
6. Once you have infinite mana, you may target any other permanent using Minamo's ability, or you may use Chromatic Orrery's second ability to draw infinite cards if you control a colored permanent

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite card draw
• Infinite draw triggers
• Infinite untap of legendary permanents you control