Voltaic Construct, Bello, Bard of the Brambles, and Nyx Lotus

Prerequisites

• Voltaic Construct on the battlefield
• Bello, Bard of the Brambles on the battlefield
• Nyx Lotus on the battlefield

Steps

1. Activate Nyx Lotus by tapping it, adding at least Activate Voltaic Construct by paying , untapping Nyx Lotus
2. Repeat

Results

• Infinite untap of artifact creatures you control
• Infinite mana among colors with which you have devotion