Bury Elminster Deep: The Sage of Shadowdale, Book II

Elminster's archenemy, the vampiric Lord Manshoon, thinks he has destroyed Elminster at last. But Elminster survives in the form of magical ash, and with the help of his scion, a fop who is growing into a true nobleman, and his longtime companion Storm, he still has a chance to counter Manshoon's insidious plots.