Voltaic Construct, Coveted Jewel, and Cyberdrive Awakener

Prerequisites

• Voltaic Construct on the battlefield
• Coveted Jewel on the battlefield
• Cyberdrive Awakener in hand
• Coveted Jewel does not have summoning sickness
• available

Steps

1. Cast Cyberdrive Awakener by paying
2. When Cyberdrive Awakener enters the battlefield, it triggers, causing each noncreature artifact you control to become a 4/4 artifact creature until end of turn
3. Activate Coveted Jewel by tapping it, adding three mana of any one color
4. Activate Voltaic Construct by paying , untapping Coveted Jewel
5. Repeat from step 3

Results

• Infinite colored mana