Did you need to read a book to do the combine? when I hit combine says it looks right but I need to know something more to do it. cant seem to find the right book yet.
You need to do The New Tanaan Merchant Alliance quest and scribe the reward the Merchant Alliance Tradebook. The quest is given by Kerst Frostrift who is in the building next to the small bank in PoK.
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Alliance Artisan Demonicspawn Dealerofdeath, Scoundrel of the Oathbreakers Ogre Shadow Knight Vertigo Tunare - The Seventh Hammer