Pirate Gambler

{b}{b}, {t}: Put a -1/-1 Counter on target creature
{1}{g}{g}, {t}: Put a +1/+1 counter on target
creature
{3}{b}{g}, {t}: Choose two target creatures and roll
a dice for each of them. If the dice is odd destroy
the creature. if the dice is even give them a -1/-1
counter that will increase at their
controllers upkeep.