Mystic (Warcraft III)

Mystics were night elf units in Warcraft III: Reign of Chaos. They appear only in the night elf mission Brothers in Blood. They were part of the Barrow Deeps Watchers, and resided only in the prison's library guarding a number of magical artifacts. They have the appearance of human Apprentice Wizards, a variant of the high elf Priests, and are tinted red. They notably cast shamanistic spells and are the only non-druid male night elves in the game.

Pure

 * Removes all buffs from a target unit, and slows its movement speed by a factor of 5.
 * Purged units will slowly regain their movement speed over 15 seconds.
 * Deals 400 damage to summoned units.

Bloodlust
While Mystics do technically have the Bloodlust ability, it is the Shaman's version, not the neutral version. They do not have it researched, so they can't actually use it.

Speculation
The Mystics share a number of similarities with night elven lorekeepers; as with those of the Shen'dralar they are hidden away beneath the earth in places of knowledge, and like the Talrendis Lorekeepers they are also spellcasters.