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Spoilers for Books 1–8
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Equipment · Introduced in Book 3
Donut’s Prism Iris Goggles
D’nadia sends Donut the unique Prism Iris Goggles. They protect her eyes and expand the ways she can see targets and aim magic originating from her eyes.[1]
Choose Book 3 or later above to read this section.
Protection and alternate vision
The goggles protect Donut against blindness, including magical blindness, and let her see through darkness and additional ranges such as heat and ultraviolet. These are practical advantages for a cat whose attacks and observations often depend on where she is looking.
They also focus and divide energy magic originating from her eyes. Donut reports being able to send Magic Missile toward four targets. Splitting a spell does not produce four unchanged copies of its full force: an early divided attack fails to knock down a target, showing why the extra coverage comes with a tradeoff.[2]
Choose Book 3 or later above to read this section.
Information still needs interpretation
Heat vision becomes useful against disguises when Carl suspects that changeling brains should be hotter than the surrounding imitation. That starts as a hypothesis. Comparing actual subjects and seeing the unexpectedly hot head of a disguised opponent makes it useful in the field.
The method is not an infallible identity detector. Chris’s igneous body produces a confusing heat reading, and the party needs other evidence, including communication, to establish who he is. Unusual vision can reveal a physical difference without automatically explaining its cause.[3]
Choose Book 4 or later above to read this section.
What later concealment tests show
The goggles let Donut perceive the technologically cloaked Madness Monkeywrenches when magical detection fails. That establishes an important distinction between the means of concealment and the means of discovery: a failed magic scan does not mean nothing is there.
It also does not establish that the goggles defeat every illusion or disguise. Each useful detection remains tied to the kind of signal Donut can actually see.[4]
Choose Book 7 or later above to read this section.
Objects are not the same as people
During the later mimic problem, the goggles help identify disguised objects. The discussion does not grant the same reliable solution for every mimic shaped like a person. Readers should not carry an object-detection success forward as a blanket promise that Donut can instantly identify any disguised individual.[5]
Choose Book 8 or later above to read this section.
History
Book 3
The Dungeon Anarchist’s Cookbook
D’nadia equips Donut
Donut immediately tries splitting Magic Missile. Each branch hits with less force, so she needs practice to decide when splitting a shot is useful.[2]
Finding the invisible bolts
After Katia sheds a large amount of mass, Donut spots invisible bolts in flight and lodged in her body. She guides Carl so he can pull them out. The bolts prove that Katia has been hit and explain some of her distress, without settling every suspicion about Hekla.[6]
Choose Book 3 or later above to read this section.
Book 4
The Gate of the Feral Gods
Testing heat vision against disguises
Carl suggests detecting disguised enemies by their hot brains, and a sample upgrade is applied to the goggles. Donut tests guards and later notices unusual heat in Henrik’s head despite his misleading display.
Chris shows why the test needs caution. His unusual body can produce the warning sign without making him the disguised enemy they are looking for. The group still needs other evidence.[7]
Choose Book 4 or later above to read this section.
Book 7
This Inevitable Ruin
Seeing through technological cloaking
Donut later sees the Madness Monkeywrenches through technological cloaking that defeats magical detection. It is another useful application of the goggles, though not proof that they reveal every hidden enemy.[4]
Choose Book 7 or later above to read this section.
Book 8
A Parade of Horribles
Limits during the mimic threat
During the later mimic threat, the group distinguishes mimics disguised as objects from those posing as people. The goggles cannot settle the whole problem with one glance.[5]
Choose Book 8 or later above to read this section.
Sources
References are to Matt Dinniman’s novels. Book links open our recap guides.
- The Dungeon Anarchist’s Cookbook, Chapter 15.
- The Dungeon Anarchist’s Cookbook, Chapters 15–16.
- The Gate of the Feral Gods, Chapters 7–14.
- This Inevitable Ruin, Chapter 30.
- A Parade of Horribles, Chapter 87.
- The Dungeon Anarchist’s Cookbook, Chapter 22.
- The Gate of the Feral Gods, Chapters 7, 9–10, 14.