Silas Renn, Seeker Adept, Time Sieve, and Myr Battlesphere

Prerequisites

• Silas Renn, Seeker Adept on the battlefield
• Time Sieve on the battlefield
• Myr Battlesphere in the graveyard
• Silas Renn does not have summoning sickness and cannot be blocked and killed by an opponent
• each turn available

Steps

1. Deal combat damage with Silas Renn
2. Silas Renn triggers, allowing you to cast Myr Battlesphere from your graveyard this turn
3. Cast Myr Battlesphere from your graveyard by paying
4. Myr Battlesphere enters the battlefield, creating four 1/1 Myr creature tokens
5. Activate Time Sieve by tapping it, sacrificing Myr Battlesphere and sacrificing the four Myr tokens, causing you to take an extra turn after this one
6. Repeat each turn

Results

• Infinite turns