User blog comment:Xilinoc/Ch. 598 - The Shooting Star Project (We Only Have To Beat You Mix)/@comment-5693502-20140925165030/@comment-1338810-20140926152613

Shutara's invention at its most common is probably the shihakusho, but by extension could be the ability of Soul Society to create objects out of reishi itself. I'm thinking she can thus weave/reweave any object made of spirit particles, which is how she could turn W's own clothes into a deathtrap.