Skarmory, Armored Bird

Flying, protection from green.
Whenever Skarmory takes damage, it gets +1/-1 until end of turn.
{u}: Skarmory gains first strike until end of turn.
{3}{c}, {t}: Put two -1/-1 counters on a creature.
{3}{w}, {t}: Skarmory deals 2 damage to target creature. It can't attack or block until end of turn.
{4}{b}, {t}: Skarmory deals 2 damage to target creature. If it has a -1/-1 counter on it,
Skarmory deals 4 damage instead.