In addition, attach the DX Swordriver Hissatsu Holder to the DX Seiken Swordriver to hold up to 3 Wonder Ride Books. Lastly, one of the holders work in part with the Kaenken Rekka as you can dock it in said holder, allowing you to perform another special move.
DX Swordriver Hissatsu Holder & Jackun to Domamenoki Wonder Ride Book cost 3,080 yen and is set for an early September release.