Magic Resistance. The archmage has Advantage on saving throws against spells and other magical effects.
Spellcasting. The archmage casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 18):
At will: Detect Magic, Disguise Self, Invisibility, Mage Armor (included in AC), Mage Hand, Minor Illusion, Prestidigitation
1/day each: Mirage Arcane, Weird
2/day each: Creation, Major Image, Nystul's Magic Aura, Seeming
Beguiling Spells (2/Day). The archmage casts Hypnotic Pattern or Mirror Image, using the same spellcasting ability as Spellcasting.
Protective Magic (3/Day). The archmage casts Counterspell or Shield in response to the spell's trigger, using the same spellcasting ability as Spellcasting.
Multiattack. The archmage makes four Arcane Burst attacks.
Arcane Burst. Melee or Ranged Attack Roll: +10, reach 5 ft. or range 150 ft. Hit:21 (3d10 + 5) Force damage.
Masters of Magic