One Piece [HD]: Nami - Black Ball: Raiun Rod

literally meaning “Black Ball: Thundercloud Rod“): Nami makes a long chain of dark clouds come out of her Clima-Tact. She then swings the cloud chain around her, electrocuting anyone within range of it. It seems to be an upgraded version of her Thunder Lance Tempo and Thunder Charge: Swing Arm used in combination. It was first used against a group of New Fishman Pirates