The Enigma Jewel // Locus of Enlightenment, Deserted Temple, and Golgari Rot Farm

Prerequisites

• The Enigma Jewel // Locus of Enlightenment on the battlefield
• Deserted Temple on the battlefield
• Golgari Rot Farm on the battlefield

Steps

1. Activate Golgari Rot Farm by tapping it, adding
2. Activate Deserted Temple's second ability by paying and tapping it, targeting itself
3. Locus of Enlightenment triggers, copying Deserted Temple's ability, targeting Golgari Rot Farm
4. Resolve both Deserted Temple abilities, untapping it and Golgari Rot Farm
5. Repeat

Results

• Infinite mana lands you control can produce
• Infinite untap of lands you control