Gastly, Fume Phantom

Flying, protection from green and colorless
{1}{b}, {t}: Gastly deals 2 damage to target creature. Tap that creature.
{2}{b}, {t}: The next time Gastly attacks,
target creature must block it if able.
{2}{b}, {t}: Target player loses life equal to
Gastly's toughness.
{3}{b}, {t}:Gastly deals 2 damage to target creature. If Gastly took damage this turn, destroy that creature instead.