Tome Wraith

The Tome Wraith is a ghost guarding a Tome of Knowledge, Tome of Agility +2, Tome of Intelligence +2 and Tome of Strength +2 in the caverns under an Darkspear Islands isle in the Maelstrom. Thrall defeats her in the dungeon of the Underworld Minions and takes the tomes in his escape of the dungeon on his journey to Kalimdor.

Source
Appears in The Fires Down Below of the Warcraft III Demo campaign.