Mannequin made sword

Parian’s creation blocked his view of Foil and Tecton.  He froze it, looped it.

Jack, for his part, drew his sword.  He cut, and the weapon sliced through the cloth.

“That’s spider silk,” Parian said.

[...]

“No.  It’s very, very real, Theodore,” Jack said.  He paced a little, letting the sword drag on the ground.  The blade was white, Golem noted.  White, exceptionally sharp.

Mannequin-made?