Voltaic Construct, Howlsquad Heavy, and Memnarch

Prerequisites

• Voltaic Construct on the battlefield
• Howlsquad Heavy on the battlefield
• Memnarch on the battlefield
• available

Steps

1. Cause Howlsquad Heavy to become an artifact using Memnarch
2. Activate Howlsquad Heavy by tapping it, adding at least
3. Activate Voltaic Construct by paying , untapping Howlsquad Heavy
4. Repeat from step 2

Results

• Infinite red mana
• Infinite untap of artifact creatures you control