I'm a fan of Blizzard Entertainment, especially with their Warcraft. It was so deep in the story and also the character development was so awesome! After read the Story and also playing the games since Warcraft: Orcs and Human, I found that Gul'dan is one of the source of the chaotic in the Warcraft Universe.
Here is the Fan-art of Gul'dan, the first Horde leader and the strongest warlock ever exist in the Warcraft Universe. :)
Uploaded 05 March 2017