Urchin

Urchins are 3-foot globes bristling with thousands of 3-inch needles, and each species has its own color. Like oysters, they are harvested for the stones that form within.

An urchin shoots several spines per round, matching a light crossbow for range and accuracy. Eyeless, it senses its targets through innate clairvoyance, which grants +2 to hit with every spine. Damage varies by species, and many spines are paralytic or lethal. Its supply of spines is effectively endless.

They live in shallows and on coastal shoals, scavenging dead shellfish and sometimes catching fish. Man-sized beings are safe from them unless they threaten an urchin or come within 10 feet. At low tide there is a 10% chance one forages on shore, rolling along surprisingly fast.

Each contains a crystalline organ-gem tied to its clairvoyance. Worth little as a jewel, it is prized by alchemists, with value set by quality and species.

This distant relative walks on five thin legs and never enters the sea. Timid, it attacks only those who come within ten feet, and its paralysis lasts six turns. It has no organ-gem, but 80% grow pearls; an old one holds 2d6 worth 1d6x100 gp apiece.