OGC:Gear Spider (5e Creature)

Tiny construct, unaligned

Armor Class 13 (natural armor)
Hit Points 28 (8d4+8)
Speed 20 ft., climb 20 ft.

Skills Perception +0, Stealth +4
Damage Resistances bludgeoning, piercing, slashing
Damage Immunities poison, psychic
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified, poisoned
Senses , darkvision 60 ft.,passive Perception 10
Languages —
Challenge 1 (200 XP)

Illusion-Proof. The gear spider is immune to figments. invisibility and other illusion spells that do not create figments affect the gear spider normally.

Known Territory. The gear spider has perfect memory of an area no larger than 1,000 feet long and wide. When the gear spider sees something has changed in its area, it uses Photograph. When it can no longer use Photograph, the gear spider returns to its resting place.

Photograph. The gear spider can use a bonus action to store a black and white image of what it can see. The gear spider can hold up to 10 images at a time. Retrieving the device inside the gear spider that stores images requires a DC 16 Intelligence (tinkerer’s tools) check made over the course of 1 minute. Once the device is accessed, viewing a stored image requires a DC 12 Intelligence (Investigation) check to make out any details.

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A rock bounces into view before sprouting small, needle-like limbs and scrabbling up off the ground. It bears itself up on a half dozen legs or more as two of them legs scratch away some dirt from itself revealing a smudged, glassy surface. The creature pivots itself around to take in its surroundings before skittering forward into the shadows.

Although they may not seem to be as exceptional as larger constructs, gear spiders are extremely sophisticated devices. Contained within their elliptical bodies are high-functioning logic engines that make them just slightly “smarter” than their peers, so familiar with a territory that they’re able to recognize when something has been altered or changed. They are limited in their use but far superior to most other guards—untiring, relentless, impartial, and not bad at fighting back when intruders resort to violence.