Orc Shaman

Under the leadership of Thrall, the Orcs have rediscovered their ancient Shamanistic traditions. In an attempt to rid the Horde of its demonic corruption, Thrall banned the use of Warlock magic and necromancy. Now, all Orc magic users practice Shaman magic which draws its power from the natural world and the elements.
Ability
Purge - Removes all buffs from a target unit, and slows its movement speed. Purged units will slowly regain their movement speed over a short duration and also deals damage to summoned units. Purge does not slow friendly units when used on them and causes units to stop for a brief moment when first cast.
Lightning Shield - Forms a shield of electricity around a target unit, dealing damage per second to units around it.
Bloodlust - Increases a friendly unit's attack rate and movement speed.