Sources
CR
Type
Size
Alignment
Movement

Mutated Drow

Huge drow, Neutral Evil

Armor Class 14 (natural armor)
Hit Points 200 (16d12 + 96)
Speed 40 ft.
STR
27
+8
DEX
10
+0
CON
22
+6
INT
12
+1
WIS
16
+3
CHA
16
+3
Saving Throws CON +10, WIS +7, CHA +7
Skills Insight +7, Perception +7
Senses darkvision 120 ft., passive Perception 17
Languages Elvish, Undercommon
Challenge 9 (5,000 XP)

Traits

Keen Smell. The drow has advantage on Wisdom (Perception) checks that rely on smell.

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

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

Spellcasting

Innate Spellcasting. The drow's innate spellcasting ability is Charisma (spell save DC 15). The drow can innately cast the following spells, requiring no material components:

At will: dancing lights

1/day each: darkness, faerie fire

Actions

Multiattack. The drow makes two morningstar attacks.

Morningstar. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit:21 (3d8 + 8) piercing damage.

Rock. Ranged Weapon Attack: +12 to hit, range 60/240 ft., one target. Hit:30 (4d10 + 8) bludgeoning damage.