Bucky, Winter Soldier

Bucky, Winter Soldier enters the battlefield
tapped and doesn't untap during your untap step.
Sacrifice another creature: Untap Bucky, Winter Soldier and put a +1/+1 counter on it.
{b}{b},{t}: Bucky, Winter Soldier deals damage
equal to its power to target creature. If that
creature dies this turn, put a +1/+1 counter on
Bucky, Winter Soldier.