Shadow Knight

Stealth (Whenever this creature attacks, you may
exile it. If you do, during combat of your next turn,
after blockers are declared, return it to the battlefield
tapped and attacking.)
Whenever Shadow Knight attacks, other black creatures you control gain menace until end of
turn. (They can't be blocked except by two or more creatures.)
{b}: Shadow Knight gets +1/+1 until end
of turn.