Trazyn the Infinite, Voltaic Construct, and Grim Monolith

Prerequisites

• Trazyn the Infinite on the battlefield
• Voltaic Construct in the graveyard
• Grim Monolith in the graveyard
• Trazyn the Infinite does not have summoning sickness

Steps

1. Trazyn the Infinite using Grim Monolith's first activated ability by tapping it, adding
2. Activate Trazyn the Infinite using Voltaic Construct's ability by paying , untapping Trazyn the Infinite
3. Repeat

Results

• Infinite colorless mana
• Infinite untap of artifact creatures