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Phase Spider

Challenge3

Rules source: Monster Manual (2025) · CR: 3 · Type: Monstrosity

Combat statistics

  • Armor Class: 14
  • Hit Points: 45 (7d10 + 7)
  • Speed: Walk 30 ft., Climb 30 ft.
  • Initiative: +3 (13)
  • Challenge: 3 (700 XP)
  • Skills: Stealth +7
  • Senses: Darkvision 60 ft., Passive perception 10
  • Languages: None
  • Proficiency Bonus: +2
  • Damage resistances: None listed
  • Damage vulnerabilities: None listed
  • Damage immunities: None listed
  • Condition immunities: None listed
Ability Score (modifier) Saving throw
STR 15 (+2) +2
DEX 16 (+3) +3
CON 12 (+1) +1
INT 6 (-2) -2
WIS 10 (+0) +0
CHA 6 (-2) -2

Revised rules text

Traits

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

Multiattack. The spider makes two Bite attacks.

Bite. Melee Attack Roll: +5, reach 5 ft.

Hit: 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.

Bonus actions

Ethereal Jaunt. The spider teleports from the Material Plane to the Ethereal Plane or vice versa.

Reference from your core rulebook

The links below open the original rulebook pages for the complete printed stat block, including traits, actions, spellcasting, reactions, and usage limits. The printed block is authoritative if searchable text elsewhere on this page differs.

Monster Manual (2025) — PDF page 242

Open the original rulebook — PDF page 242 — source PDF is not included in this player reference.

Printed book page: 239.

Sources

  • Your supplied Monster Manual (2025) — source PDF is not included in this player reference. — verified local reference
  • Monster Manual — original reference dataset (legacy source)
  • SRD 5.2.1 (external reference) — complete revised rules block
  • Structured SRD transcription (external reference) — searchable text; printed block remains authoritative

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Original campaign references: Phase Spider