Alyc the Archfey

Legendary Resistance (3/Day). If Alyc fails a saving throw, it can choose to succeed instead.

Innate Spellcasting. The Archfey's spellcasting ability is Charisma (spell save DC 14). It can innately cast the following spells, requiring only verbal components::

At will: Minor Illusion, Prestidigitation, Vicious Mockery, Primal Savagery, Ray of Frost 

1. 4/day: detect magic, magic missile, shield, thunderwave, Charm Person, Command

1. 4/day: acid arrow, detect thoughts, invisibility, mirror image

3. 4/day: slow, counterspell, dispel magic, polymorph, dimension door, call lightning,  conjure animals

4. 1/day: fireball

Alec wields a golden chalice with Pyramid-like engravings on the inside.

Corrosive Swill. Ranged attack. Alec shoots out a 15 ft. cone of corrosive acidic swill. All creatures within range must make a DC 13 DEX saving throw or take 9 (2d6) acid damage on a failed save, or half as much on a successful one.

Random Spell (Recharge 5-6). Alyc casts a random spell.

Alyc can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Alyc regains spent legendary actions at the beginning of his turn.

Cantrip (1 action). Alyc casts a cantrip.

Polymorph (Costs 1 Action). Alyc uses True Polymorph for free.

Frightening Gaze (Costs 3 Actions). Alyc fixes his gaze on one creature it can see within 10 feet of it. The target must succeed on a DC 15 Wisdom saving throw against this magic or become frightened for 1 minute. The frightened target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a target's saving throw is successful or the effect ends for it, the target is immune to Alyc's gaze for the next 24 hours.