Archmage

Medium humanoid (any race), any alignment

Armor Class 12 (15 with mage armor)
Hit Points 99 (18d8 + 18)
Speed 30 ft.

STR	DEX	CON	INT	WIS	CHA
10 (+0)	14 (+2)	12 (+1)	20 (+5)	15 (+2)	16 (+3)

Saving Throws Int +9, Wis +6
Skills Arcana +13, History +13
Damage Resistance damage from spells; nonmagical bludgeoning, piercing, and slashing (from stoneskin)
Senses passive Perception 12
Languages any six languages
Challenge 12 (8,400 XP)

Special Traits

• Magic Resistance: The archmage has advantage on saving throws against spells and other magical effects.
• Spellcasting: The archmage is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). The archmage can cast disguise self and invisibility at will and has the following wizard spells prepared:
• Cantrips (at will): fire bolt, light, mage hand, prestidigitation, shocking grasp
• 1st level (4 slots): detect magic, identify, mage armor,* magic missile
• 2nd level (3 slots): detect thoughts, mirror image, misty step
• 3rd level (3 slots): counterspell, fly, lightning bolt
• 4th level (3 slots): banishment, fire shield, stoneskin*
• 5th level (3 slots): cone of cold, scrying, wall of force
• 6th level (1 slot): globe of invulnerability
• 7th level (1 slot): teleport
• 8th level (1 slot): mind blank*
• 9th level (1 slot): time stop

*The archmage casts these spells on itself before combat.

Actions

• Dagger: Melee or Ranged Weapon Attack: +6 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2 piercing damage.