Adal’s agents are alert to news of powerful magic. If a major magic item or potentially controllable monster is discovered— whether in Khorvaire or Xen’drik—Adal might hire freelance agents to acquire it for him. He’s also cautious enough to hire deniable “independents” to do the initial testing of any spell or weapon prototypes his cabal develops.
If the PCs try to sell powerful magic items, schemas, or other items of arcane power, Adal serves as a potential buyer. A DC 15 Diplomacy check is usually sufficient to get a meeting with one of Adal’s lieutenants at the Ministry of Magic, or perhaps with Adal himself. Characters with a connection to the Arcane Congress may meet Adal within the floating castles of Arcanix.