Ambusher. The mangler has advantage on initiative rolls.

Multiattack. The mangler makes two Claw attacks.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:8 (1d8 + 4) slashing damage. If the attack roll has advantage, the target also takes 7 (2d6) psychic damage.

Flurry of Claws (Recharge 5–6). The mangler makes six Claw attacks. Either before or after these attacks, it can move up to its speed without provoking opportunity attacks.

Shadow Stealth. While in dim light or darkness, the mangler takes the Hide action.