Please be as specific as possible when letting us know what is missing or incorrect. For example, say "this game's trophy difficulty should be 8/10", with a link to a website corroborating this difficulty estimate (if possible), not "this game's trophy difficulty is wrong".
Zen is the name of the virtual currency used within Neverwinter. Zen can be used to purchase items not limited to but including cosmetic enhancements, accessories, in-game pets, mounts and much more!