Set contents: layer (1), disc (1), driver (1), launcher (1), sticker (1), game instructions (2). The ultimate beat Metal sword awakening layer. When the lock progresses, the metal sword built into the DB core expands and the weight focuses on the tip of the sword, increasing the attack force. The disc "Xn" is compatible with new function "BU "lock"!.When the protrusion on the top of the disc and the protrusion on the back of the DB. - Core overlap - Core overlap the lock is reinforced.