rare ne large aberration 

Perception +33; darkvision, tremorsense (imprecise) 60 feet

Languages Aklo, Common, Shadowtongue

Skills Athletics +33, Deception +34, Occultism +31, Society +31, Stealth +34

Str +9 Dex +6 Con +6 Int +5 Wis +3 Cha +6

Odorless A myrucarx emits no smell and can't be detected by scent.

AC  41; Fort +32, Ref +28, Will +30

HP 340; Resistances cold 20

Light Blindness

Painful Light When attempting a save against a light effect, a myrucarx gets a result one degree of success lower than it rolled. A myrucarx caught in sunlight is stunned 2 and clumsy 2.

Speed 30 feet, climb 30 feet; freedom of movement

Melee [>] jaws +34 (magical, reach 15 feet), Damage 3d10+15 piercing plus Grab

Occult Innate Spells DC 40, attack +32; 9th chilling darkness, eclipse burst, project image (at will, see illusory persona); 7th chilling darkness (at will), darkness (at will), mask of terror (self only), plane shift

Shadow Plane only) 5th hallucinatory terrain (at will); 2nd invisibility (at will, self only); Constant (8th) freedom of movement.

Illusory Persona The illusion created by the myrucarx's project image can resemble any Medium humanoid, including any specific individual it has seen, and has appropriate voice, scent, and mannerisms, allowing the myrucarx to use its Deception check to Impersonate that humanoid if it chooses.

Twisting Reach [>] Frequency once per round; Effect The fanged mouths at the ends of a myrucarx's tendrils twist around obstacles. The myrucarx makes two jaws Strikes against the same target, ignoring the target's cover. Both attacks count toward the myrucarx's multiple attack penalty, but the penalty doesn't increase until after both attacks are made. The myrucarx can't Grab as its next action after.

Twisting Reach.

AoE5, page 85.