Darth Vader, Voidwalker

Stormtroopers you control get +1/+1 and have first strike.
{2}{w}{b}: Create a 1/1 white and black Stormtrooper creature token.
{3}{w}{b} or {2}{p/w}{p/b}: Put two -1/-1 counters on target nontoken creature.If there are five or more Stormtroopers on the battlefield under your control, you may create a 3/3 colorless AT-AT creature token with "This creature is a Stormtrooper."
"You have failed me for the last time."