Time Sieve, Myr Battlesphere, and Mechanized Production

Prerequisites

• Time Sieve on the battlefield
• Myr Battlesphere on the battlefield
• Mechanized Production on the battlefield
• Mechanized Production attached to Myr Battlesphere

Steps

1. At the beginning of your upkeep, Mechanized Production triggers, creating a token copy of Myr Battlesphere
2. The Myr Battlesphere token enters the battlefield, creating four 1/1 Myr creature tokens
3. Activate Time Sieve by tapping it, sacrificing the Myr Battlesphere token and sacrificing the four Myr tokens, causing you to take an extra turn after this one
4. Repeat each turn

Results

• Infinite turns