Today @Diablo informed us that Blizzard is continuing (renewing?) their fan-submitted comic contests. Every two months they pick three winners, who get $250, $150, and $100 for their work, and entries are now accepted in the Starcraft, Warcraft, and Diablo universes. See the official rules and entry guidelines, and good luck.
If you’re working on an entry, you could do worse than post it for some feedback in our. It’s a good spot to get eyeballs for your art or fiction set in the Diablo universe.