User blog comment:Xilinoc/Ch. 639 - BABY,HOLD YOUR HAND 2/@comment-26091912-20150820085132/@comment-1338810-20150821071149

@GL089, Mayuri isn't the first person to have an adaptable Bankai or be able to tailor his Bankai to beat his opponent, so the new form of Konjiki Ashisogi Jizo isn't that big of a cry foul. Byakuya was the first to show us that with enough ingenuity and practice, there can be infinite permutations on the basic abilities granted by a Bankai. Mayuri is just sort of shorthanding it by using weird science instead of training in a cave or communing with the Zanpakuto spirit or whatever.