Zantha, Exiled Monk

This creatures deals damage in the form of -1/-1
counters.
{1}{r}{r}{r}: This creature becomes a 4/4 red
dragon with "{t}: deal 2 damage to target creature
or player" until end of turn. It maintains all other abilities during this.
"He was a promising student, but he fought with too
much hate in his heart" - Hanzo