Jobox-Ob, Bloodfire Slicer

Haste, wither
Creatures with -1/-1 counters on them have
wither.
Whenever a creature with -1/-1 counters on it
dies, Jobox-Ob deals damage to it's controller
equal to the number of counters it had.
{1}{b/g}{b/r}, {t}: put a -1/-1 on each other creature