Spider of Leng

These bloated purple spiders have small claws on their front legs that serve them as handlike manipulators. Their abdomens are a sickly purple-white.

Hate Humanoids. The nefarious spiders of Leng are highly intelligent. They are a very ancient race, steeped in evil lore and hideous malice, with an abiding hatred for all humanoid races. They sometimes keep ghostwalk spiders as guardians or soldiers.

Dangerous Blood. Their blood is poisonous and corrosive to most creatures native to the Material Plane. The folk of Leng prize it in the making of etheric harpoons and enchanted nets.

Spider of Leng

Large aberration, chaotic evil

Armor Class 15 (natural armor)

Hit Points 144 (17d10 + 51)

Speed 30 ft., climb 20 ft.

14 (+2) 16 (+3) 16 (+3) 17 (+3) 10 (+0) 10 (+0)

Saving Throws Dex +6, Con +6, Int +6

Skills Athletics +5, Perception +3, Stealth +6

Damage Resistances poison

Condition Immunities charmed, poisoned, unconscious

Senses darkvision 240 ft., passive Perception 13

Languages Common, Void Speech

Challenge 7 (2,900 XP)

Eldritch Understanding. A spider of Leng can read and use any scroll.

Innate Spellcasting. The spider of Leng’s innate spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

At will: Comprehend Languages, Detect Magic, Shocking Grasp

3/day each: Shield, Silence

1/day each: Arcane Eye, Confusion, Hypnotic Pattern, Stoneskin

Poisonous Blood. An attacker who hits a spider of Leng with a melee attack from within 5 feet must make a successful DC 15 Dexterity saving throw or take 7 (2d6) poison damage and be Poisoned until the start of its next turn.

Shocking Riposte: When a spider of Leng casts Shield, it can also make a Shocking Grasp attack for 9 (2d8) lightning damage against one enemy within 5 feet as part of the same reaction.


Multiattack. A spider of Leng makes two claw attacks, two staff attacks, or one of each.

Claw. Melee Weapon Attack. +6 to hit, reach 5 ft., one target. Hit: 14 (2d10 + 3) slashing damage plus 4 (1d8) poison damage.

Spit Venom. Ranged Weapon Attack: +6 to hit, range 60 ft., one target. Hit: 16 (3d8 + 3) poison damage, and the target must make a successful DC 14 Constitution saving throw or be Poisoned and Blinded until the end of its next turn.

Staff of Leng. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) bludgeoning damage plus 13 (2d12) psychic damage, and the target must make a successful DC 15 Wisdom saving throw or be Stunned until the start of the spider’s next turn.


Ancient Hatred. When reduced to 0 hp, the spider of Leng makes one final spit venom attack before dying.