Tawnos, Urza's Apprentice, Mechanized Production, and Myr Battlesphere

Prerequisites

• Tawnos, Urza's Apprentice on the battlefield
• Mechanized Production on the battlefield
• Myr Battlesphere in hand
• available

Steps

1. Cast Myr Battlesphere by paying
2. Myr Battlesphere enters the battlefield, triggering its ability
3. Holding priority, activate Tawnos by paying and tapping it, copying Myr Battlesphere's trigger
4. Resolve both Myr Battlesphere triggers, creating eight 1/1 Myr artifact creature tokens
5. At the beginning of your next upkeep, Mechanized Production triggers, creating a token copy of the artifact it is attached to and causing you to win the game

Results

• Win the game at the beginning of your next upkeep