Time Sieve, Myr Battlesphere, Teleportation Circle, and Doomed Artisan

Prerequisites

• Time Sieve on the battlefield
• Myr Battlesphere on the battlefield
• Teleportation Circle on the battlefield
• Doomed Artisan on the battlefield

Steps

1. At the beginning of your end step, Teleportation Circle and Doomed Artisan trigger
2. Resolve the Doomed Artisan trigger, creating a X/X Sculpture artifact creature token
3. Resolve the Teleportation Circle trigger, blinking Myr Battlesphere
4. When Myr Battlesphere enters the battlefield, its first ability triggers, creating four 1/1 Myr artifact creature tokens
5. Activate Time Sieve by tapping it and sacrificing the Sculpture and Myrs, causing you to take an extra turn after this one
6. Repeat each turn

Results

• Infinite turns