Teaches alchemists how to create [Major Mana Potion]. The recipe is sold by Magnus Frostwake, who is invisible until the player has the [Spectral Essence] item equipped. It also sometimes drops from Darkmaster Gandling in Scholomance. It has been reported (unconfirmed) that the dropped version of this is Bind on Equip, not Bind on Pickup. Alchemists with The Burning Crusade may wish to skip this recipe and create [Unstable Mana Potion] instead, which has the same effect, is learned from Alchemy trainers in Outland, uses cheaper herbs and provides a chance at discovering a new recipe.