Phase Spider

Phase Spider, CR 3

Large monstrosity, unaligned

Armor Class 13

Hit Points 32 5d10+5 )

Spell Points

Speed 30ft Climb: 30ft

STR

15
+2

DEX

15
+2

CON

13
+1

INT

6
-2

WIS

10
+0

CHA

6
-2

Proficiency Bonus 2

Skills Stealth 1d20+6

Senses Blindsight 10 ft., Darkvision 60 ft., Passive Perception 8

Languages --

Special Abilites

Ethereal Jaunt. As a Bonus Action, the spider can magically shift from the Material Plane to the Ethereal Plane, or vice versa.
Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Web Sense. While in contact with a web, the spider knows the exact location of any other creature in contact with the same web.
Web Walker. The spider ignores movement restrictions caused by webbing.

Actions

Bite. Melee Attack : 1d20+4 to hit, reach 5 ft., one target. Hit: 7 ( 1d10+2 ) Piercing Damage, and the target must make a DC 11 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 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is Paralyzed while poisoned in this way.
Web (Recharge 5–6). Ranged Attack: 1d20+5 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 12 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to Fire Damage; immunity to Bludgeoning, Poison, and Psychic Damage).

Reactions

Phase. When the spider is targeted by an attack, including a spell attack, it magically shifts from the Material Plane to the Ethereal Plane, or vice versa.

Legendary Actions

The spider can take 3 epic actions, choosing from the options below. Only one epic action option can be used at a time and only at the end of another creature's Turn. The spider regains spent epic actions at the start of its turn.
Bite Attack. The spider makes a bite attack.
Phase. The spider magically shifts from the Material Plane to the Ethereal Plane, or vice versa, and moves up to half its speed if it wishes.
Web Spray (Costs 3 Actions). The spider makes a web attack against all creatures within 10 feet of it.

Item drops

Treasure Drops