Lights out!Wakka, Final Fantasy X.
Dark Buster, found on Wakka's Sphere Grid, inflicts non-elemental damage to one enemy, but has an 100% chance of inflicting Darkness for one turn at the cost of 10 MP.
buster" means a person who breaks up something, e.g. crime busters, or something big or unusual for its kind. It derives from the verb "bust".The word "