Drider

Large monstrosity · CR 6

Armor Class 19

Hit Points 123 (13d10+52)

Speed climb 30 ft., 30 ft.

STR 16 +3

DEX 16 +3

CON 18 +4

INT 13 +1

WIS 14 +2

CHA 12 +1

Skills perception +5, stealth +9

Senses darkvision120 ft. , passive Perception 15

Languages Elvish, Undercommon

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 1/day each: darkness, faerie fire
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.

Multiattack.: The drider makes three attacks, either with its longsword or its longbow. It can replace one of those attacks with a bite attack.
Bite. Melee/Ranged Weapon Attack: +6 to hit.: Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 2 (1d4) piercing damage plus 9 (2d8) poison damage.
Longsword. Melee/Ranged Weapon Attack: +6 to hit.: Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used with two hands.
Longbow. Melee/Ranged Weapon Attack: +6 to hit.: Ranged Weapon Attack: +6 to hit, range 150/600 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 4 (1d8) poison damage.