Magic Resistance. The archmage has advantage on saving throws against spells and other magical effects.

Spellcasting. The archmage is a 20th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 19, +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 shield

2nd level (3 slots): shatter, mirror image, misty step

3rd level (3 slots): counterspell, fly, lightning bolt 

4th level (3 slots): banishment, dimension door, gravity sinkhole* Resilient Sphere

5th level (3 slots): cone of cold, scrying, wall of force teleportation circle,  archmagi armor

6th level (1 slot): globe of invulnerability arcane gate, disintegrate, scatter,  gravity fissure, true shield

7th level (1 slot): teleport  plane shift, reverse gravity, force cage

8th level (1 slot): demiplane* 

9th level (1 slot): meteor swarm

*The archmage casts these spells on itself before combat.

Spell Mastery

At 18th level, you have achieved such mastery over certain spells that you can cast them at will. Choose a 1st-level wizard spell and a 2nd-level wizard spell that are in your spellbook. You can cast those spells at their lowest level without expending a spell slot when you have them prepared. If you want to cast either spell at a higher level, you must expend a spell slot as normal.

Durable Magic

Beginning at 10th level, the magic you channel helps ward off harm. While you maintain concentration on a spell, you have a +2 bonus to AC and all saving throws.

• Heightened Spell. When you cast a spell that forces a creature to make a saving throw to resist its effects, you can spend 3 sorcery points to give one target of the spell disadvantage on its first saving throw made against the spell.

• Quickened Spell. When you cast a spell that has a casting time of 1 action, you can spend 2 sorcery points to change the casting time to 1 bonus action for this casting.

• Transmuted Spell spell deals a type of damage from the following list, you can spend 1 sorcery point to change that damage type to one of the other listed types: acid, cold, fire, lightning, poison, thunder.

• Twinned Spell. When you cast a spell that targets only one creature and doesn't have a range of self, you can spend a number of sorcery points equal to the spell's level to target a second creature in range with the same spell (1 sorcery point if the spell is a cantrip). To be eligible for Twinned Spell, a spell must be incapable of targeting more than one creature at the spell's current level.

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.

shield, trueshield