Whispering Aura. At the start of each of Vilda’s turns, each creature of her choice within 5 feet of her must succeed on a DC 15 Wisdom saving throw or take 10 (3d6) psychic damage, provided that Vilda isn’t incapacitated.

Spellcasting. Vilda is a 14-level spellcaster. Its spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). Vilda has following Warlock spells prepared:

Cantrips (at will): chill touch, eldritch blast, guidance, mage hand, minor illusion, prestidigitation, shocking grasp 

1st - 5th level (3 5th-level slots): armor of Agathys, arms of Hagar, crown of madness, enemies abound, contact other plane, detect thoughts, Evard's black tentacles, dissonant whispers, dominate person, synaptic static, vampiric touch 

Dagger. Melee Weapon Attack: +5 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.