Nullifying Aura: Within 30 feet of the Abyssal Nullifier, all creatures are affected by a nullifying aura. This aura suppresses sight, hearing, and sense of touch. Creatures affected by this aura are considered blinded, deafened, and lose their sense of touch, granting them disadvantage on all ability checks, attack rolls, and saving throws that rely on sight, hearing, or touch. Players will no longer be able to tell if they were hurt or how many hit points they have until they are in death saves.

Multiattack: The Abyssal Nullifier makes two attacks: one with its tentacles and one with its bite.

• Tentacles (Melee Weapon Attack): +7 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage. If the target is a Medium or smaller creature, it is grappled (escape DC 15). Until this grapple ends, the target is restrained, and the Abyssal Nullifier can't use the same tentacle on another target.
• Bite (Melee Weapon Attack): +7 to hit, reach 5 ft., one target. Hit: 15 (2d10 + 4) piercing damage.

There are no bonus actions for the creature.

The Abyssal Nullifier 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 Abyssal Nullifier regains spent legendary actions at the start of its turn.

Nullifying Gaze (Costs 2 Actions): The Abyssal Nullifier targets one creature it can see within 60 feet of it. The target must succeed on a DC 15 Constitution saving throw or become paralyzed until the end of its next turn.

Sweeping Strike (Costs 2 Actions): The Abyssal Nullifier makes a tentacle attack against each creature within 10 feet of it.

Teleportation (Cost 3 Actions): The Abyssal Nullifier can move to an area it can see within 50 feet of itself.