This item is no longer available in game.
This item was a drop from a rather unique slime in Western Plaguelands, called Large Vile Slime. At the time, it was the only known ooze-type aberration with a mana bar.The phylactery was removed from its loot table in Patch 1.7.0. The Large Vile Slime was removed in the Cataclysm expansion. For more information about their role in speculation regarding Ashbringer please visit their articles on wowpedia.org.