Voltaic Key + Rings of Brighthearth + Empowered Autogenerator

Prerequisites

• Empowered Autogenerator has at least three charge counters on it.

Steps

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

Effects

• Infinite charge counters on a permanent
• Infinite colored mana
• Infinite mana artifacts you control can produce
• Infinite untap of artifacts you control