Darius, Hand of Noxus

Wither, Bloodthirst 3
{2}{b/r}: Put two -1/-1 counters on up to two target creatures.
{b/r}{b/r}: Target creature loses indestructible until end of turn destroy it, activate this ability only if the creature has 5 or more -1/-1 counters on it.
I do not tolerate cowardice!