Large Swarm of Large monstrosities, Lawful Evil
Armor Class 19 (natural armor)
Hit Points 123 (13d10 + 52)
Speed 50 ft., Climb 30 ft.
STR
16 (+3)
DEX
16 (+3)
CON
18 (+4)
INT
13 (+1)
WIS
14 (+2)
CHA
20 (+5)
Saving Throws CON +7, CHA +8
Skills Perception +5, Stealth +9
Damage Immunities Psychic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
Condition Immunities Charmed, Deafened, Frightened
Senses Darkvision 120 ft., Passive Perception 15
Languages Elvish, Undercommon Common, undercommon
Challenge 6 (2,300 XP)
Proficiency Bonus +3
Traits

Fey Ancestry. The drider has advantage on saving throws against being charmed, and magic can't put the drider to sleep.

Innate Spellcasting. The drider's innate spellcasting ability is Wisdom (spell save DC 13). The drider can innately cast the following spells, requiring no material components:

At will: dancing lights, charm person, mirage arcane, arcanist's magic aura

1/day each: darkness, faerie fire, dimension door, dancing lights

Spider Climb. The drider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Sunlight Sensitivity. While in sunlight, the drider has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Web Walker. The drider ignores movement restrictions caused by webbing.

Web Sense: While in contact with a web, the beldam knows the exact location of any other creature in contact with the same web.

Future sight: Beldam can mildly predict the future. The Beldam sends a trinket  back to the real world as soon as she's finished changing it to look like something appealing to her prey. this trinket allows her to scry her target.

Actions

Multiattack. The beldam makes three attacks, either with her claws. It can replace one of those attacks with a bite attack.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 10 (2d8) piercing damage plus 9 (2d8) poison damage.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 23 (4d8 + 3) slashing damage

Whisper of life (recharge 5-6).  When a creature is making death saving throws, the beldam can offer to give the creature life up to half their max hit point. Should the creature accept they operate as if they are under the dominate person spell for 1 minute.

Bonus Actions

Victim Soul Extraction: The Beldam can kidnap and store up to two adult victims in a vessel in her possession after she reduces their hit points to 0, When freed, they emerged without any memory of the experience and their appearance slowly reverted to the original. She is also able to claim the souls of her victims, whose souls were trapped in the other world, bound to their eyes which now belonged to the beldam. This prevented them from moving on.

Description

The beldam stands fifteen feet tall and weighs 800 pounds. They are seemingly immortal and are only able to be killed by violence. The Beldam is a spirit of the forest in a very ugly and old woman's body. Sometimes she has the ability to change her shape. She lives in a dark, dreadful, hidden little house.

Habitat: Underdark

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