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, Find Familiar, Mage Armor (included in AC), Mage Hand, Prestidigitation, Unseen Servant
1/day each: Incendiary Cloud, Lightning Bolt (level 8 version), Plane Shift, Teleport
2/day: Dimension Door
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:27 (4d10 + 5) Force damage.
Benign Transposition (3/Day). The archmage teleports up to 30 feet to an unoccupied space that it can see. If it instead chooses a space within range that is occupied by a willing creature, they both teleport, swapping places.
Masters of Magic