Sources
CR
Type
Size
Alignment
Movement

Mind Flayer Nothic

Medium Aberration, Neutral Evil

Armor Class 15 (natural armor)
Hit Points 45 (6d8 + 18)
Speed 30 ft.
STR
14
+2
DEX
16
+3
CON
16
+3
INT
13
+1
WIS
10
+0
CHA
8
-1
Skills Arcana +3, Insight +4, Perception +2, Stealth +5
Senses truesight 120 ft., passive Perception 12
Languages Undercommon
Challenge 2 (450 XP)

Traits

Keen Sight. The nothic has advantage on Wisdom (Perception) checks that rely on sight.

Actions

Multiattack. The nothic makes two claw attacks.

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:6 (1d6 + 3) slashing damage.

Mind Blast (Recharge 5–6). The nothic magically emits psychic energy in a 30-foot cone. Each creature in that area must succeed on a DC 12 Intelligence saving throw or take 10 (2d8 + 1) psychic damage and have the stunned condition until the end of its next turn.

Weird Insight. The nothic targets one creature it can see within 30 feet of it. The target must contest its Charisma (Deception) check against the nothic's Wisdom (Insight) check. If the nothic wins, it magically learns one fact or secret about the target. The target automatically wins if it is immune to being charmed.

Lore

A nothic is a monstrous creature with terrible talons and a single great eye. When driven to violence, it uses its horrific gaze to rot the flesh from its enemies' bones.