Larvitar, Rock Skin

As long as Larvitar has a -1/-1 counter on it,
it gets +2/+0.
{b}, {t}: Larvitar deals 1 damage to target creature.
{2}, {t}: Target creature gets -0/-1 until end of turn.
{2}{r}, {t}: Larvitar deals 1 damage to each nonred creature.
{4}{r}, {t}: Larvitar deals 3 damage to up to two target creatures an opponent controls.