Heed the Call
Stratagem
Target: Metroplex, Autobot City
While your opponent has no untapped characters and you have Metroplex, Autobot City on the battlefield Each of your non-Titan characters has Pierce 3.
When Metroplex, Autobot City defends and you flip at least [W][O][B] Repair 1 damage from him. He can't take more attack damage this battle than the number of 
the attacker has.
