Logan of Darkborg

{t}, Create a 3/3 Dark Sprit with deathtouch.
{b/r}{u/r}{g/u}{t}, Target opponent loses 10 life
{c}{c}{c}{c}{c}{c}{c}{c}, Target opponent’s life total is 1.
Whenever Logan of Darkborg attacks, creatures your opponents control get -4/-4 until end of turn and Darkborg creatures you control gain +4/+4 until end of turn.