Very hard to spot in haze

May have one of the abilities below

Swim speed 6. Blindsight in water.

Bile spray attack (1/encounter): Reach 3 cone. 2d6. On crit inflict 1 level of contamination. On death: Bile spray attack reach 1.

Has heavy armour.

Truesight. Immune to frightened and psychic damage. Psychic shriek: Reach 4. Int save 11 or 5 dmg + frightened until healed.

Attacks against you have disadvantage. When hit: Teleport 6 and make a weapon attack.

Attacks you make are at adv. Attacks against you are at adv. You roll 1 more dice for damage.

Sheds bright light. Octarine beam: Targets one creature reach 12, DC13 Dex save. 10 dmg on fail. 1 contamination if failed by 5+.

Bounding: Can move over obstacles and through people without opp attacks. Leech: on hit gains riding.

Sneak attack: Does 7 extra dmg to unaware targets.

Has climbing speed 6. Spine attack x 3: Range 6. 1d4+2. Melee attackers take 4 damage.

Squeezer: Can fit through 6 inch spaces. When attacking inflicts dazed on crit.