The Enigma Jewel // Locus of Enlightenment, Voltaic Key, and Stonespeaker Crystal

Prerequisites

• The Enigma Jewel // Locus of Enlightenment on the battlefield
• Voltaic Key on the battlefield
• Stonespeaker Crystal on the battlefield

Steps

1. Activate Stonespeaker Crystal by tapping it, adding
2. Activate Voltaic Key by paying and tapping it, targeting Stonespeaker Crystal
3. Locus of Enlightenment triggers, copying Voltaic Key's ability, targeting Voltaic Key
4. Resolve both Voltaic Key abilities, untapping it and Stonespeaker Crystal
5. Repeat

Results

• Infinite mana artifacts you control can produce
• Infinite colorless mana
• Infinite untap of artifacts you control