At least on GL, and I'm sure on all shards now or soon. Talk to the strange guards. Start by saying one's name. For those who don't know, they respond to "keywords". These keywords are from what they say. It seems, but I haven't checked it out to be sure if it's the only, but the last word of what they say is always a keyword and brings a new response. Edit: Just one of them responds. On GL it's Conan the Elite Guard.