Sire of Insanity

Sire of Insanity
CR 12Huge Fiend (demon), Chaotic Evil
Reveal Stat Block
Armor Class
17 (natural armor)Hit Points
157 (15d12 + 60)Speed
40 ft.str
23
+6
dex
6
-2
con
19
+4
int
14
+2
wis
19
+4
cha
22
+6
Traits
Aura of Mind Erosion.Any creature that starts its turn within 30 feet of the sire must make a 18 Wisdom saving throw. On a successful save, the creature is immune to this aura for the next 24 hours. On a failed save, the creature has disadvantage for 1 minute on Wisdom and Charisma checks and on Wisdom and Charisma saves. At the start of each of its turns, the sire can suppress this aura until the start of its next turn.
Magic Resistance.The sire has advantage on saving throws against spells and other magical effects.
Actions
Multiattack.The sire makes two attacks: one with its bite and one with its claws.
Bite.mw 10 to hit, reach 5 ft., one creature. ({@damage 3d12 + 6) piercing damage plus 16 (3d10) psychic damage.
Claws.mw 10 to hit, reach 10 ft., one target. ({@damage 1d8 + 6) slashing damage plus 9 (2d8) psychic damage.