The Tripartite Tower

From the front page of the PDF: The Harpers need a powerful expert on arcane magic, someone with decades of experience. All you have to do is travel to meet with a famous but reclusive wizard and secure his aid. Unfortunately, the Netherese aren't going to make it easy. A Living Forgotten Realms adventure set in Cormyr for characters of the Paragon tier (levels 11-20). This adventure (along with NETH4-1) is part of the Foresight Major Quest, which concludes in NETH4-3.