Urza, Prince of Kroog + Myr Battlesphere + Mechanized Production

Urza, Prince of Kroog

Myr Battlesphere

Mechanized Production

How it works

1. Cast Myr Battlesphere by paying 7.
2. Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens.
3. At the beginning of your next upkeep, Mechanized Production triggers.
4. Holding priority, activate Urza by paying 6, creating a token copy of Myr Battlesphere that is a 1/1 Soldier in addition to its other types.
5. The Myr Battlesphere token enters the battlefield, creating four 1/1 Myr artifact creature tokens.
6. Resolve the Mechanized Production trigger, creating a token copy of the artifact it is attached to and causing you to win the game.