A sewer ooze can sense nearby motion through vibration and air movements.

Motion Sense 60 feet

30 feet. A creature that enters the area must attempt a DC 23 Fortitude save. On a failure, the creature is <a href="/condition/sickened">Sickened 1</a> (<a href="/condition/sickened">Sickened 2</a> on a critical failure). A creature taking persistent acid damage from the ooze&#x27;s pseudopod can&#x27;t recover from the sickened condition. A creature that succeeds at its save is temporarily immune for 1 minute.

Noxious Scent

Frequency once per minute
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Effect The sewer ooze unleashes a wave of filth, covering all creatures within a 20-foot emanation. Each creature in the area must succeed at a DC 24 Reflex save or take 1d4 acid damage and a –10-foot penalty to its Speeds for 1 minute (on a critical failure, the creature also falls <a href="/condition/prone">Prone</a>). A creature can spend an Interact action to clean someone off, decreasing the Speed penalty by 5 feet with each action.

Filth Wave

Mutated Sewer Ooze - mindless, mutant, ooze

30 feet. A creature that enters the area must attempt a @Check[fortitude|dc:23] save. On a failure, the creature is @UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 1} (@UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 2} on a critical failure). A creature taking persistent acid damage from the ooze's pseudopod can't recover from the sickened condition. A creature that succeeds at its save is temporarily immune for 1 minute.

Frequency once per minute
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Effect The sewer ooze unleashes a wave of filth, covering all creatures within a @Template[emanation|distance:20]. Each creature in the area must succeed at a @Check[reflex|dc:24|options:area-effect,damaging-effect] save or take @Damage[1d4[acid]|options:area-damage] damage and a –10-foot penalty to its Speeds for 1 minute (on a critical failure, the creature also falls @UUID[Compendium.pf2e.conditionitems.Item.Prone]). A creature can spend an Interact action to clean someone off, decreasing the Speed penalty by 5 feet with each action.
@UUID[Compendium.pf2e.bestiary-effects.Item.Effect: Filth Wave]