Mishra, Eminent One, Gonti's Aether Heart, and Brudiclad, Telchor Engineer

Prerequisites

• Mishra, Eminent One on the battlefield
• Gonti's Aether Heart on the battlefield
• Brudiclad, Telchor Engineer on the battlefield

Steps

1. At the beginning of your combat phase, Mishra and Brudiclad trigger
2. Resolve the Mishra trigger, creating a 4/4 artifact creature token copy of Gonti's Aether Heart named Mishra's Warform
3. When Mishra's Warform enters the battlefield, it and Gonti's Aether Heart trigger, causing you to get four energy counters
4. Resolve the Brudiclad trigger, creating a 2/1 Phyrexian Myr artifact creature token
5. When the Phyrexian Myr enters the battlefield, Mishra's Warform and Gonti's Aether Heart trigger, causing you to get four energy counters
6. Activate Mishra's Warform by paying eight energy counters and exiling it, causing you to take an extra turn after this one
7. Repeat each turn

Results

• Infinite turns