claw attack on hit requires a DC 15 constitution saving throw or become poisoned for 1 round

Multiattack. The Queen makes three attacks. 2 claws and a bite or tail attack

Bite. Melee Weapon Attack: +9 to hit, reach 5 ft. one target. Hit: 15 (3d6 + 5) piercing damage.

Tail. Melee Weapon Attack: +9 to hit, reach 10 ft. one target. Hit: 15 (3d6 + 5) bludgeoning damage.

disengage as a bonus action

The Komodo Dragon Queen can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The Komodo Dragon Queen regains spent legendary actions at the start of its turn.

1 action Tail Swipe. The aboleth makes one tail attack.

3 actions Tidal Breath (Recharge 5-6). The sea beast exhales a 30-foot cone of cold seawater. Each creature in that area must make a DC 12 Constitution saving throw, taking 33 (6d10) cold damage on a failed save, or half as much on a successful one.