Gilded Lotus, Voltaic Key, and Kurkesh, Onakke Ancient

Prerequisites

• Gilded Lotus on the battlefield
• Voltaic Key on the battlefield
• Kurkesh, Onakke Ancient on the battlefield

Steps

1. Activate Gilded Lotus by tapping it, adding
2. Activate Voltaic Key by paying and tapping it, untapping Gilded Lotus
3. Kurkesh triggers, causing you to pay to copy Voltaic Key's ability
4. Resolve the copy of Voltaic Key's ability, untapping itself
5. Repeat

Results

• Infinite colored mana