Drafna, Founder of Lat-Nam, Voltaic Key, and Empowered Autogenerator

Prerequisites

• Drafna, Founder of Lat-Nam on the battlefield
• Voltaic Key on the battlefield
• Empowered Autogenerator on the battlefield
• Empowered Autogenerator has at least one charge counter on it

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, untapping Empowered Autogenerator
3. Activate Empowered Autogenerator by tapping it, putting a charge counter on it and adding for each charge counter on it
4. Activate Drafna's first ability by paying , returning Voltaic Key from the battlefield to your hand
5. Cast Voltaic Key by paying
6. Repeat from step 2

Results

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