Luminbrain Crab
Armor Class 15 (natural armor)
Hit Points 52 (8d8+16)
Speed 20 ft. swim 20 ft.
Saving Throws Con +4, Wis +3
Skills Stealth +6, Perception +4
Damage Immunities psychic
Senses darkvision 60 ft., passive Perception 14
Languages Common, telepathy 60 ft.
Challenge 4 (1,100 XP) Proficiency Bonus +2
Actions
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Lore & Description
Appearance
A crab of medium size, but its carapace is a pale, glassy blue, almost translucent. The shell reveals a glowing brain that pulses with cerulean light. The legs and claws are sturdy, and the eyes ride atop small stalks above the shell. When it moves, the glow shifts with its muscles, casting eerie blue shadows across rocks and water.
Behavior & Origins
This creature is the product of a long-forgotten arcane experiment that fused psionic energy with a crustacean. Luminbrain Crabs haunt tidal pools and reef crevices, using their visible brains to sense minds in the vicinity. The glow can lure prey and intimidate rivals, while the psionic pulse from the brain unsettles those who stare too long. Sailors tell stories of a blue, living lantern that drifts along coastlines at dusk, flashing like a distant star before vanishing beneath the waves.
