Amphibious

The Abyssal Lurker can breathe air and water.

Shadow Beneath the Surface

While submerged or in dim light or darkness, the lurker has advantage on Dexterity (Stealth) checks and can hide as a bonus action.

Pressure Ambush

On the first turn of combat, if the lurker hits a creature that hasn’t taken a turn yet, the attack deals an extra 10 (3d6) cold damage, and the target must succeed on a DC 14 Strength saving throw or be grappled.

Multiattack

The Abyssal Lurker makes two attacks: one with its Tearing Claws and one with Barbed Tendril, or two claw attacks.

Tearing Claws

Melee Weapon Attack: +5 to hit, reach 5 ft., one target
Hit: 9 (1d10 + 3) slashing damage

Barbed Tendril

Melee Weapon Attack: +5 to hit, reach 15 ft., one target
Hit: 7 (1d8 + 3) piercing damage, and the target must succeed on a DC 14 Strength saving throw or be pulled 10 feet toward the lurker.

If the target is pulled into water, it is restrained until the end of its next turn.

Drag Below (Recharge 5–6)

The lurker attempts to pull a grappled or restrained creature into deeper water.

The target must make a DC 14 Strength saving throw:

• Fail: The target is knocked prone, restrained, and begins holding its breath.

• Success: The target is freed from the grapple.

Slip Away

When a creature misses the lurker with a melee attack, the lurker can move up to half its swim speed without provoking opportunity attacks.