Broken Jaw Hag

Undying
When Broken Jaw Hag enters the battle field it targets an opponents creature. That creature gains vendetta. If Broken Jaw Hag kills the target creature you gain 3 health. If that creature dies for any other reason you lose 1 health. Broken Jaw Hag can be summoned from your graveyard and can't block other creatures than it's vendetta if it's vendetta is on the field.