Quite a nasty looking guy, sure wouldn't want to run into him. Nice set of robes, the stone snakes and glowing skulls do give a more refined voodoo style. Good blood splatter, the shroud is well done, nice work. Looking forward to more.
I've only played Magic: The Gathering a couple of times, and liked the game but I'm honestly more for Dungeons and Dragons, though I don't get to play a whole lot lately at all, due to studying and writing and working on getting my writing published.
I really loved your work here: the coloring is quite awesome, I love the dark shadows and the whole theme of it. The way you've done this entire piece is just as impressive. (I'm afraid I'm not very good at writing critism, though I'm working on improving that.)
Just love the attitude of the main character - contrast between the gloomy and very necromantic environment and the inspiration and devotion of the priest. The color patterns and contrasts, with the touches of blood red, are exquisite. Great work !