This is a logo I entered to a contest just recently arranged by a semi-serious World of Warcraft guild. At least, "semi-serious" was what my very much extensive research led me to believe, meaning they play for fun but they also do 40-man raids.
Restrictions were 400x106 pixels, and image entered in a web-compatible format.
First I was thinking of having some goblins equipped with mining-picks and explosives trying to steal the golden letters, but due to lack of time i just made a simple dragon.
Time spent: 5-6 hours. I could definitely work more on this one, but I'm not very fond of it, and it was enough to win the contest so I'm leaving it alone for the time being.