They, Bound by Hatred

Other Kreepos you control get +1/+1 and Slimey. (Whenever a creature with Slimey becomes blocked by a creature with greater
power, you may remove it from combat. If you
do, untap it.)
{w}{u}{b}{r}, {t}: Feed twice. (Put a -1/-1
counter on target creature, then put a +1/+1 counter on another target creature, twice.)