Spellcasting. The mage is an 10th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). The mage has the following wizard spells prepared:

Cantrips (at will): fire bolt, light, mage hand, prestidigitation

1st level (4 slots): detect magic, mage armor*, magic missile, shield

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

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

4th level (3 slots): fire shield*, greater invisibility

5th level (1 slots): cone of cold

*The mage casts these spells on itself before combat.

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.

Arcane Step. The mage phases into a magical mist and teleports up to 30 feet to an unoccupied space that it can see.

Villain Actions: to be taken at initiative count 20.

Round 1 - Give me some space. The mage casts wall of force.

Round 2 - Give me a hand. The mage casts dominate person.

Round 3 - Give me your strength. The mage casts enervation