Barracks T2

{t}{w}put a white 0/1 sniper creature token with first strike, when this creature blocks or blocked by a creature it get +3/+0 until end of turn -
{t}{w}Exert: put a white 3/3 grenadier human creature token -
{t}{w}{w}Exert: put a white 4/5 Zone Trooper human creature token -
As long as you control a tech center you may {t}{w}{w}{w}Exert: make a white 8/4 legendary commando creature token with first strike -(onto the battlefield)