Fey Ancestry. Aerisi has advantage on saving throws against being charmed, and magic can't put her to sleep.

Howling Defeat. When Aerisi drops to 0 hit points, her body disappears in a howling whirlwind that disperses quickly and harmlessly. Anything she is wearing or carrying is left behind.

Legendary Resistance (2/Day). If Aerisi fails a saving throw, she can choose to succeed instead.

Spellcasting. Aerisi is a 12th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). Aerisi has the following wizard spells prepared:

Cantrips (at will): gust, mage hand, message, prestidigitation, ray of frost, shocking grasp

1st level (4 slots): charm person, feather fall, mage armor, thunderwave

2nd level (3 slots): dust devil, gust of wind, invisibility

3rd level (3 slots): fly, gaseous form, lightning bolt

4th level (3 slots): ice storm, storm sphere

5th level (2 slots): cloudkill, seeming (cast each day)

6th level (1 slot): chain lightning

Windvane. Melee or Ranged Weapon Attack: +9 to hit, reach 5 ft. or range 20/60 ft., one target. Hit:9 (1d6 + 6) piercing damage, or 10 (1d8 + 6) piercing damage if used with two hands to make a melee attack, plus 3 (1d6) lightning damage.