Donut's spell creates two mechanical copies of Mongo and is now embedded in her brass cog-topped staff totem.
Donut casts Clockwork Triplicate on Mongo during the hydra fight. Two clockwork duplicates appear beside the dinosaur and pause with him for her instructions.
The same skill is incorporated into Donut's staff totem, whose top is marked by a brass cog.
A feathered dinosaur flanked by two precise clockwork copies beneath a cog-topped staff.
The spell multiplies Mongo into a coordinated three-body combat unit.
Also appears in books you've already read — spoiler-safe to their endings: