https://www.dndbeyond.com/monsters/avarice

Two armored flesh golems.

Avarice is a cruel and vindictive tiefling trained in the arcane tradition of evocation. She likes using her magic to destroy things, and her hunger for magic items knows no bounds. Her supreme confidence means that she never backs down from a challenge, even when the odds are clearly stacked against her. Seeing other wizards as a threat, paranoia rules her life.

Avarice has been a member of the Arcane Brotherhood for almost two years. She fantasizes about rising to fame and prominence in record time and hopes that plundering the lost Netherese city of Ythryn will turn her fantasies into reality.

The tiefling has the secret support of the archdevil Levistus, having traded her soul years ago for her first taste of magical power. Levistus speaks to her in dreams and guides her path. Shortly after Avarice arrived in Ten-Towns, Levistus urged her to seek out the Black Sword. Avarice didn’t know who or what the Black Sword was until she was approached by cultists of Levistus bearing swordlike shards of chardalyn worn as pendants around their necks. These self-styled Knights of the Black Sword offered her sanctuary in the keep of Caer-Dineval, where they are based. Although she doesn’t trust the cultists, they treat her with more respect than anyone else does, and the keep is a safer location than most other places in Ten-Towns.

Companions. Avarice has a pair of loyal gargoyles named Gargle and Gurgle who serve her as bodyguards and scouts. Avarice uses her Rary’s telepathic bond spell to stay in telepathic contact with her gargoyles before sending them off on any mission. Avarice also has the support of the Knights of the Black Sword, if she needs to call on their talents.

Familiar. Avarice’s familiar throughout the adventure is a squawking raven named Skelm. It uses the raven stat block in the Monster Manual but is a fiend instead of a beast.

Spellbook. Avarice’s spellbook has white leather covers and vellum pages. The tiefling’s personal sigil is burned into the front cover. The book contains the spells Avarice has prepared plus the following additional spells: burning hands, cone of cold, find familiar, ice storm, lightning bolt, rope trick, thunderwave, tongues, wall of fire, and wall of force.