Large Monstrosity, Unaligned
Armor Class 15 (natural armor)
Hit Points 165 (15d10 + 75)
Speed 10 ft., Swim 20 ft.
STR
20 (+5)
DEX
8 (-1)
CON
20 (+5)
INT
2 (-4)
WIS
10 (+0)
CHA
7 (-2)
Condition Immunities Blinded, Prone
Senses Blindsight 60 ft. (blind beyond this radius), Passive Perception 12
Languages --
Challenge 7 (2,900 XP)
Proficiency Bonus +3
Traits

Amphibious. The clamper can breathe air and water.

Held Fast. While in contact with a solid surface, the clamper has advantage on ability checks and saving throws to resist being moved against it's will.

Reactive Appendages. For each appendage the clamper has beyond one, it gets an extra reaction that can be used only for opportunity attacks.

Multiple Appendages. The clamper has four appendages. Whenever the clamper takes 30 or more damage in a single turn, one of its appendage dies. If all its heads die, the clamper cannot take any actions.

False Appearance.While the clamper remains motionless, it is indistinguishable from a clam-covered rock.

Actions

Multiattack. The clamper makes as many tentacle/bite attacks as it has appendages.

Tentacle. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 10 (1d10 + 5) bludgeoning damage and the target is grappled (escape DC 15). While grappled in this way, the target is restrained and take 2d8 bludgeoning damage at the start of their turn, and the clamper can't use the same tentacle on another creature. A tentacle that is grappling a creature may instead make a Bite attack against the grappled creature.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) piercing damage.

 

Description

This mollusk resembles a growth of rock or coral covered with several large (but still normal-looking) clams. When a swimmer nears it, however, the clamper lashes out with long, flexible arms of muscle for which the “clams” are the tips. These appendages encircle and crush prey, with the clam-like tip serving as a viciously biting mouth. A coral clamper normally has four appendages, and these grow to a length of 20ft. The clamper’s body is protected by its hard, coral-like shell. If one of the appendages scores a hit, the victim must make a saving throw or be held helpless by the tentacle-like grasp. The clam-mouth at the end of the tentacle can attack while a victim is held, but cannot generally reach a victim other than the one held in the muscle-tentacle. 

Habitat: SwampUnderwater

Weeou

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