Oysterbed Elder
Large monstrosity, unaligned
Oysterbeds outlive the men who seed them, and the elder has outlived them all. It is a reef with opinions: a barnacled mound of shell and spite the size of a hut, older than the customs hulk, dreaming in the shallows. Wade too close and the bed opens, the water turns sharp, and the flats gain another layer of shell.
Armor Class 16 (natural armor)
Hit Points 127 (15d10 + 45)
Speed 15 ft., swim 20 ft.
- STR
- 17 (+3)
- DEX
- 7 (-2)
- CON
- 17 (+3)
- INT
- 3 (-4)
- WIS
- 12 (+1)
- CHA
- 5 (-3)
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities acid
Senses tremorsense 30 ft., passive Perception 11
Languages —
Challenge 4
Traits
Reef Camouflage. The elder has advantage on Dexterity (Stealth) checks made to hide on the seabed or among shells and rocks.
Acid Shell. A creature that hits the elder with a melee attack while within 5 feet of it takes 3 (1d6) acid damage.
Actions
Shell Slam. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 16 (3d8 + 3) bludgeoning damage, and if the target is Medium or smaller it is grappled (escape DC 13).
Engulf. As a bonus action, the elder swallows one creature it is grappling that is Medium or smaller. The engulfed creature is restrained, cannot breathe, and takes 13 (3d8) acid damage at the start of each of the elder's turns. The elder can engulf only one creature at a time.
