YOUR SPOILER CUTOFF
Spoilers for Books 1–8
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All eight books included

Consumable · Introduced in Book 2
Acute Ears skill potion
The Acute Ears skill potion gives Donut level-three Acute Ears. The skill adds information to unidentified enemy dots, helping her judge the size and possible species of hidden threats.[1]
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Reading concealed threats
Acute Ears shows an enemy’s size and can suggest a species Donut already knows. Those clues help her recognize a concealed boss, though they do not guarantee a correct identification every time.[2]
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History
Book 2
Carl’s Doomsday Scenario
Donut receives the potion in her upgraded quest rewards. She uses the extra information to detect a hidden boss during the next investigation.[2]
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Sources
References are to Matt Dinniman’s novels. Book links open our recap guides.
- Carl’s Doomsday Scenario, Chapter 13.
- Carl’s Doomsday Scenario, Chapters 13–14.