Chromatic Orrery, Drafna, Founder of Lat-Nam, and Manifold Key

Prerequisites

• Chromatic Orrery on the battlefield
• Drafna, Founder of Lat-Nam on the battlefield
• Manifold Key in hand

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Cast Manifold Key by paying
3. Activate Manifold Key's first ability by paying and tapping it, untapping Chromatic Orrery
4. Activate Drafna's first ability by paying , returning Manifold Key from the battlefield to your hand
5. Repeat
6. Once you have infinite mana, you may activate Chromatic Orrery's second ability instead to draw infinite cards

Results

• Infinite card draw
• Infinite colored mana
• Infinite colorless mana
• Infinite draw triggers
• Infinite storm count
• Infinite untap of artifacts you control