Saturday Night Fever causes all players in range of the caster will be compelled to disco and enter a limited Berserk state. Berserk targets will continuously lose HP and SP as well as lose huge amounts of defense and flee rate, yet they will gain a large amount of physical ATK. Item usage is disabled in this berserk state, and affected players will be forced to sit on the ground for 3 seconds after berserk wears off. If the skill succeeds in affecting more than 7 players at once, the Lord of Madness will appear deal 9999 damage to all affected. An / is required to cast this skill.