Worth its Weight in Gold

This quest is started by talking to the elf in the druid camp. He asks you to deliver a letter to the dwarf banker, Vilvaldi, in Vizima. You simply give the letter to Vivaldi, and return with the response. However, upon coming back, you find that the elf has gone missing, and The Order and the scoi'tel are preparing for battle. You can still deliver the letter before choosing a side, or choose neither side and forgo a bit of experience, but remain neutral.