Much like Frizz and Woosh, this move is a charge special. Using it normally will have the Hero fire Zap (costing 8 MP), a short electric blast forward, but the move can be charged into Zapple (ライデイン, Raidein) (18 MP) and Kazap (ギガデイン, Gigadein) (42 MP), with the former having him shoot lightning forward and a large bolt striking down on the stage, and the latter having a bolt of lightning hit his blade, before the Hero slashes around himself. Hero gains super armor while unleashing his fully charged Kazap.
Zap is a weak lighting spell that was introduced in Dragon Quest III. Zapple and Kazap are the stronger variations that are learned at higher levels, Kazap also introduced in Dragon Quest III, Zapple introduced in Dragon Quest Monsters: Joker.
In Smash, the move is mainly based on Dragon Quest XI, however, the animation and function of Kazap is completely unique to Smash. It does, however, resemble the animation for Gigaslash in many of the main series games.