Raven Guard Legionary

Vigilance, first strike
Shadow Hunters:Whenever this creature is
blockedit gains double strike until end of turn and after
this creature has done damage you may pay {b}{g}{u}, if you do, remove it from combat and
untap it
{2}{b}{g}{u}{t}: creatures you control cannot be
blocked except by three or more creatures until end of
turn
"From the darkness we strike"