User blog comment:RaijinSenshi19/Box Openings - Galaxy Burst!!/@comment-25600444-20150727164245/@comment-25600444-20150727180317

By the way, the new Katana Secret Sword Impact. Waterfall Formation or something like that.

It can be casted from the hand, no need to dedicate deck space for Lethal Formation.

I'm gonna try it out for my Skull Warrior deck and see how that works in it. Especially with Strange Festival, Dokurobon.