What are the abilities of Alley Assailant?
user
Alley Assailant enters tapped.\nDisguise {4}{B}{B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)\nWhen Alley Assailant is turned face up, target opponent loses 3 life and you gain 3 life.
assistant