pf2e.fyi
From Pathfinder Adventure: Rusthenge, which isn't enabled.

Ancient Apparatus

COMPLEX HAZARD 2
Stealth +8 (trained)
Description A complex device made of multicolored metal that resembles a combination of grinding gears, spider-like legs, and twitching blades, from which emits a constant soft ticking sound. All of the metal in the device appears to be rusted or corroded.

Disable DC 18 Thievery to adjust the device's workings so they seize up and no longer function, or DC 21 Religion to focus prayers to a non-evil deity into the device to disrupt its ability to channel ambient faith

AC 18; Fort +5, Ref +11
Hardness 8, HP 30 (BT 15); Immunities critical hits, precision

Spin Up
Trigger The ancient apparatus takes damage or an attempt to disable it fails

Effect The ancient apparatus begins to grind and churn faster. Its soft ticking whirs up to a discordant buzzing sound, and the entire thing begins to glow with an unsettling rust-colored light. All living creatures in area D3 experience the unsettling taste of rust in their mouths and must succeed on a DC 18 Fortitude save to avoid becoming Sickened 1. The ancient apparatus then rolls initiative.
Rust Creep (disease, divine)

Those afflicted by rust creep develop uncomfortable rust-colored bruises on their flesh and endure full-body aches like those one might experience after a long workout. As the affliction progresses, their bodies—as well as the clothing and items they wear or carry—increasingly break down until a painful death occurs. If a character successfully resists contracting rust creep, or recovers from a case of rust creep, they are temporarily immune to future rust creep infections for 24 hours.

Saving Throw DC 15 Fortitude
Stage 1 –1 status penalty to Athletics checks (1 day)
Stage 2 as stage 1 (1 day)
Stage 3 Enfeebled 1 (1 day)
Stage 4 enfeebled 1 and Stupefied 1, plus any armor, clothing and items you carry and that are of a level equal to or less than the disease become broken as the decay spreads to them (1 day; broken items remain broken)
Stage 5 Unconscious (1 day)
Stage 6 unconscious (1 day)
Stage 7 death
Melee Rusty Light Beam +11 (divine), Damage 2d6+5 void plus Rust Creep
Routine (3 actions) The ancient apparatus emits beams of rust-colored light, spending an action to make ranged Strikes against three targets in area D3. The apparatus can target creatures as if it possessed darkvision, but has no ability to discern between friend or foe. It can't target a creature more than once, and if there are more than three targets, it selects its targets from those it can see in the room randomly. The ancient apparatus has only 1 action as long as its Hit Points are below its BT.
Reset The ancient apparatus reverts to its non-active mode and resets automatically at the end of any round in which there are no obvious targets to attack.
Pathfinder Adventure: RusthengeOGL