Urza and Mechanized Production on the battlefield.
({7} magic symbol) , with an additional ({6} magic symbol) available your next turn available.
Steps
Cast Myr Battlesphere by paying ({7} magic symbol) .
Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens.
At the beginning of your next upkeep, Mechanized Production triggers.
Holding priority, activate Urza by paying ({6} magic symbol) , creating a token copy of Myr Battlesphere that is a 1/1 Soldier in addition to its other types.
The Myr Battlesphere token enters the battlefield, creating four 1/1 Myr artifact creature tokens.
Resolve the Mechanized Production trigger, 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.