5e Cards
Challenge 3: 3

Phase Spider

Large monstrosity, unaligned

Armor Class
13 (natural armor)
Hit Points
32 (5d10+5)
Speed
30 ft., climb 30 ft.
STR
15 (+2)
DEX
15 (+2)
CON
12 (+1)
INT
6 (−2)
WIS
10 (+0)
CHA
6 (−2)
Skills
Stealth +6
Senses
darkvision 60 ft., passive Perception 10
Languages
—
Challenge
3 (700 XP)
Proficiency Bonus
+2

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 Walker. The spider ignores movement restrictions caused by webbing.

Actions

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. 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.

About the phase spider

A phase spider possesses the magical ability to phase in and out of the Ethereal Plane. It seems to appear out of nowhere and quickly vanishes after attacking. Its movement on the Ethereal Plane before coming back to the Material Plane makes it seem like it can teleport.

How many for your party

Copies of the phase spider (700 XP each) against a party of four characters of the same level. Build mixed fights in the encounter builder.

Number of Phase Spider for each difficulty, party of four
Party levelEasyMediumHardDeadly
Level 2——12–20
Level 3—1—2–20
Level 5—234–20
Level 62—34–20
Level 72345–20
Level 8234–56–20

In these lists

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Questions

What CR is the Phase Spider?

The Phase Spider is challenge 3, worth 700 XP, with a proficiency bonus of +2.

How many hit points does the Phase Spider have?

32 hit points (5d10+5), with AC 13 from natural armor.

How many should I use against four 2nd-level characters?

Against four level 2 characters, 1 is hard by the encounter XP budget.