Time Sieve, Myr Battlesphere, and Cogwork Assembler

Prerequisites

• Time Sieve on the battlefield
• Myr Battlesphere on the battlefield
• Cogwork Assembler on the battlefield
• each turn available

Steps

1. Activate Cogwork Assembler by paying , creating a token copy of Myr Battlesphere with haste
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