Phase Spider Matriarch

Large monstrosity, unaligned
Armor Class 15 (natural armor)
Hit Points 120 (16d10 + 32)
Speed 30 ft., climb 30 ft.

STR	DEX	CON	INT	WIS	CHA
17 (+3)	13 (+1)	14 (+2)	8 (–1)	12 (+1)	11 (+0)

Skills Stealth +4
Senses darkvision 60 ft., passive Perception 11
Languages –
Challenge 7 (2,900 XP)

Brood Empathy. The phase spider matriarch can communicate empathically with all phase spiders of her brood within 100 feet. Each member of her brood understands her needs and wishes and fulfills them to the best of its abilities.

Ethereal Jaunt. As a bonus action, the phase spider matriarch can magically shift from the Material Plane to the Ethereal Plane, or vice versa.

Spider Climb. The phase spider matriarch can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Walker. The phase spider matriarch ignores movement restrictions caused by webbing.

Actions

Multiattack. The phase spider matriarch makes two bite attacks.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 8 (1d10 + 3) piercing damage, and the target must make a DC 14 Constitution saving throw, taking 18 (4d8) poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hp, the target is stable but poisoned for 1 hour, even after regaining hp, and is paralyzed while poisoned in this way.

Web (Recharge 5-6). Ranged Weapon Attack: +4 to hit, range 30/60 ft., one creature. Hit: The target is restrained by webbing. As an action, the restrained target can make a DC 14 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 12; hp 15; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).