Costal Wreck Crab

Amphibious. The crab can breathe air and water.

Scavenged Armor: The crab has a +2 to AC as long as the Scavenged armor in intact. The scavenged armor has 100 HP and Fire - Vulnerability outside of the crabs HP and Resistances and Vulnerabilities. Once the Scavenged Armor is reduced to 0 HP the crabs AC is reduced to 16.

False Appearance. While the crab remains motionless and withdrawn within the ship wreck, it is indistinguishable from an other ship wreck.

Claw Shield: The crab has +1 to AC as long as the crab still has its Claw Maul. If the crab takes more than half its total HP in one round the crab will remove its Claw Maul and performs the disengage action as a bonus action on its next turn.

Multiattack: The crab can make two attacks with any combination of Claw Maul, Claw Blade, Wreck Toss

Claw Maul: melee weapon attack: +7 to hit, reach 10ft., one target. 18 (4d8 + 3) Bludgeoning damage. Target must succeed a DC15 Dexterity saving throw or be knocked prone.

Claw Blade: melee weapon attack: +7 to hit, reach 5ft., one target. 14 (3d8 + 3) Slashing damage plus 6 (2d6) bleed damage.

Wreck Toss: ranged melee attack: +4 to hit, reach 20ft.-60ft., one target. 21 (6d6 + 6) Bludgeoning damage. Every time the crab uses this attack reduce the wrecks HP by 5.

Scavenged Armor Defense (Recharge 5-6): The Coastal Crab withdraws into the ship wreck on its back and becomes prone. The crab is completely immune to all attacks while withdrawn and its speed is reduced to 0. The crab can take an action to emerge from the ship wreck and is no longer prone. Any damage that would be dealt to the crab is dealt to the scavenged armor.

Wreck Slam: When the crab is being attacked by another creature the crab can spins around dealing 12 (4d6) Bludgeoning damage to any creature within 5ft. the creature must make a DC15 dexterity saving throw, on a failed save the creature takes full damage and is knocked 5ft. away on a success the creature only takes half damage. This action can be taken once per round.