Graz'zt

Large fiend (demon, shapechanger), chaotic evil

Armor Class 20 (natural armor)

Hit Points 378 (36d10+180)

Speed 40 ft.

Saving Throws Dex +9, Con +12, Wis +12

Skills Deception +15, Insight +12, Perception +12, Persuasion +15

Damage Resistances cold, fire, lightning

Damage Immunities poison; bludgeoning, piercing, and slashing that is nonmagical

Condition Immunities charmed, exhaustion, frightened, poisoned

Senses truesight 120 ft.

Languages all, telepathy 120 ft.

Challenge 24 (62,000 XP)

Shapechanger. Graz’zt can use his action to polymorph into a form that resembles a Medium humanoid, or back into his true form. Aside from his size, his statistics are the same in each form, Any equipment he is wearing or carrying isn’t transformed.

Innate Spellcasting. Graz’zt’s spellcasting ability is Charisma (spell save DC 23). Graz’zt can innately cast the following spells, requiring no material components:

At will: charm person, crown of madness, detect magic, dispel magic, dissonant whispers

3/day each: counterspell, darkness, dominate person, sanctuary, telekinesis, teleport

1/day each: dominate monster, greater invisibility

Legendary Resistance (3/Day). If Graz’zt fails a saving throw, he can choose to succeed instead.

Magic Resistance. Graz’zt has advantage on saving throws against spell and other magic effects.

Magic Weapon. Graz’zt’s weapon attacks are magical.

Actions

Multiattack. Graz’zt attacks twice with the Wave of Sorrow.

Wave of Sorrow (Greatsword). Melee Weapon Attack: +13 to hit, reach 10 ft., one target, Hit; 20 (4d6 + 6) slashing damage plus 14 (4d6) acid damage.

Teleport. Graz’zt magically teleports, along with any equipment he is wearing or carrying, up to 120 feet to an unoccupied space he can see.

Legendary Actions

Graz’zt can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creautre’s turn. Graz’zt regains spent legendary actions at the start of his turn.

Attack. Graz’zt attacks once with the Wave of Sorrow.

Dance, My Puppet!. One creature charmed by Graz’zt that Graz’zt can see must use its reaction to move up to its speed as Graz’zt directs.

Sow Discord. Graz’zt casts crown of madness or dissonant whispers.

Teleport. Graz’zt uses his Teleport action.