Amarantha the Avaricious

Subtle Spell 3/Day. A spell that has verbal and somatic components does not need to use those to cast a spell.

Twinned Spell 2/Day. A spell that has one target can be doubled to hit two targets.

 Empowered Spell 3/Day. You can reroll up to 5 damage dice when you cast a leveled spell. You must use the new rolls.

Seeking Spell 2/Day. You can reroll the d20 used to make an attack roll for a spell.

Jack of All Trades. Add +2 to all skill checks.

Devil's Sight. Your Darkvision works through magical darkness as well as standard darkness.

Armor of Shadows. Mage Armor is always active.

Spellcasting. Amarantha is a 13-level spellcaster. Its spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). Amarantha has following Bard/Sorcerer/Warlock spells prepared:
Cantrips (at will): Eldritch Blast, Mind Sliver, Minor Illusion
1st level (4 slots): Dissonant Whispers, Healing Word, Shield
2nd level (3 slots): Mirror Image, Misty Step
3rd level (3 slots): Counterspell, Fireball, Hypnotic Pattern
4th level (3 slots): Dimension Door, Freedom of Movement
5th level (2 slots): Planar Binding, Synaptic Static
6th level (1 slot): True Seeing
7th level (1 slot): Fire Storm

Multiattack. When you make the attack action, you can attack twice.

Mirrored Rapier. Melee Attack: +8 to hit, reach 5 ft., one creature. Hit: (1d8+3) piercing damage. Creatures hit with this weapon must make a DC 15 Intelligence saving throw. On a failure, future attacks made with this weapon against the effected target have advantage for 1 minute.

Mask of Many Faces. Cast Disguise Self at will.

Hellish Inspiration 5/Short Rest. As a bonus action, you can give yourself or an ally an extra d10 to use for attacks rolls and saving throws.

Cutting Words 3/Short Rest. Roll a d10, and subtract it from an enemy's attack roll, saving throw, ability check, or damage roll.

Amarantha has 3 Legendary Actions per Round.

Sultry Demeanor (Costs 2 Actions). Any sexual creature must make a DC 18 Wisdom saving throw, or become infatuated. This condition is the same effect as frightened except that you can't willingly move further away from Amarantha. Virgins have advantage. Nymphomaniacs have disadvantage.

Cast Leveled Spell (Costs 2 Actions). Cast a leveled spell.

Cast Cantrip. Casts a Cantrip.

Weapon Attack. Attack with your weapon.