I play Magic The Gathering, and being the incredible geek that i am, I made my own planeswalker avatar, and since my main decks have always been centered on slivers, he would have sliver related abilities.
Because i can't draw realistically and my skills are kinda lame xD i tried to do as much detail as i can (which is not that much).
He carries a knife strapped to his thigh, pouches with random stuff on his belt, gems on various parts of his garments, and a staff made from a hivestone. He carries a lot of stuff because he has to channel all five colors of mana, so he needs all the help he can get. That's also the reason why some parts of his clothes look kinda evil, and some other parts looks kinda elvish or white.
The blank stare is something planeswalkers do while channeling mana, it kinda flows from the eyes like fire, but in this case i also wanted to give him a blank expression to make him seem not-human, as in "part of the hive".