Voltaic Key, Rings of Brighthearth, and Empowered Autogenerator

Prerequisites

• Voltaic Key on the battlefield
• Rings of Brighthearth on the battlefield
• Empowered Autogenerator on the battlefield
• undefined

Steps

1. Activate Empowered Autogenerator by tapping it, putting a charge counter on it and adding at least
2. Activate Voltaic Key by paying and tapping it, targeting itself
3. Rings of Brighthearth triggers, causing you to pay to copy Voltaic Key's ability, targeting Empowered Autogenerator
4. Resolve both Voltaic Key abilities, untapping it and Empowered Autogenerator
5. Repeat

Results

• Infinite untap of artifacts you control
• Infinite colored mana
• Infinite mana artifacts you control can produce
• Infinite charge counters on Empowered Autogenerator