PostRoll logo
Monster · SRD 5.1

Phase Spider

Large monstrosity, unaligned

Armor Class
13
Hit Points
32 (5d10)
Speed
30 ft., climb 30 ft.
STR
15 (+2)
DEX
15 (+2)
CON
12 (+1)
INT
6 (-2)
WIS
10 (+0)
CHA
6 (-2)
Senses
darkvision 60 ft., passive perception 10
Challenge
3 (700 XP)

Traits

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.

Large monstrosity, unaligned

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.

Special Abilities

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.

Related

Add D&D 5e to your library — free

Searchable in PostRoll and linkable from your worlds, wikis, characters, and sessions. Free forever.

Add to my library

This work includes material taken from the System Reference Document 5.1 (“SRD 5.1”) by Wizards of the Coast LLC and available at https://dnd.wizards.com/resources/systems-reference-document. The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License available at https://creativecommons.org/licenses/by/4.0/legalcode.

Reformatted and reorganized for presentation on PostRoll; text unmodified.

Licensed under Creative Commons Attribution 4.0 International.

srd-5.1 · Version 1.0.0 · Updated Jul 9, 2026