Medium or Small Humanoid (Wizard), Neutral
Armor Class 17 Initiative +7 (17) Hit Points 170 (31d8 + 31) Speed 30 ft.
Saving Throws Str +0, Dex +2, Con +1, Int +9, Wis +6, Cha +3
Skills Arcana +13, History +9, Perception +6
Damage Immunities Psychic; Charmed (with _Mind Blank_)
Gear Wand
Senses Passive Perception 16
Languages Common plus five other languages
Challenge Rating 12
The archmage has Advantage on saving throws against spells and other magical effects.
The archmage makes four Arcane Burst attacks.
Melee or Ranged Attack Roll: +9, reach 5 ft. or range 150 ft. Hit: 27 (4d10 + 5) Force damage.
The archmage casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 17):
At Will: Detect Magic, Detect Thoughts, Disguise Self, Invisibility, Light, Mage Armor (included in AC), Mage Hand, Prestidigitation
2/Day Each: Fly, Lightning Bolt (level 7 version)
1/Day Each: Cone of Cold (level 9 version), Mind Blank (cast before combat), Scrying, Teleport
The mage casts Misty Step, using the same spellcasting ability as Spellcasting.
The archmage casts Counterspell or Shield in response to the spell's trigger, using the same spellcasting ability as Spellcasting.