John-117, The Master Chief

First Strike, Vigilance, Haste

John-117, The Master Chief enters the battlefield with a shield counter on it. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

If This creature is blocked while attacking. It gains trample until end of turn only if it has a shield counter on it. On your endstep you may pay {2} and gain a shield counter.

Partner (you can have two commanders if both have partner.)