You need three pristine ore samples from the mines. They weight like 10 each. Go to Steamfont between te ring and the lfay zone is the gnome Metallurgist Mirakzin. Hail him and follow the conversation. You get a bag to place the three ores in. Combine and return to him and you get a potion of Encased Mnemonic Vapor, five charges, all/all and has the effect of Mana Shield
Sry for last post, i thought it was a kewl no charge mana shield, well i was wrong