Phase Spider
Large monstrosity, unaligned
Armor Class 14 (natural armor)
Hit Points 45 (7d10 + 7)
Speed 30 ft., swim 15 ft., climb 30 ft.
str
15 (+2)
dex
16 (+3)
con
12 (+1)
int
6 (-2)
wis
10 (+0)
cha
6 (-2)
Skills Stealth +7
Senses darkvision 60 ft., passive Perception 10
Languages -
Challenge 3 (700 XP)
Ethereal Sight. The spider can see 60 feet into the Ethereal Plane while on the Material Plane and vice versa.
Spider Climb. The spider can climb difficult surfaces, including along ceilings, without needing to make an ability check.
Web Walker. The spider ignores movement restrictions caused by webs, and the spider knows the location of any other creature in contact with the same web.
Actions
Bite. Melee Attack Roll: +5, reach 5 ft. 8 (1d10 + 3) Piercing damage plus 9 (2d8) Poison damage. If this damage reduces the target to 0 Hit Points, the target becomes Stable, and it has the Poisoned condition for 1 hour. While Poisoned, the target also has the Paralyzed condition.
Multiattack. The spider makes two Bite attacks.