I just had a thought that a void xerath skin would be really cool, a small retexture of xerath with a purple aura and purple abilities. Im not an artist or anything so i cant really draw it out but i was thinking it would be a cool skin
i just recently had the same idea. change his blue lightning effect to the purple and black visual they use for several of the void abilities, add some particles like from 
's E to his body. change the look of his armor/coffin. his e would be a small orb with a visual similar to either the art used for the art in the center of 's W with the same particles from the E surrounding it. u can kinda base the Q for this 
skin off 
's W, a more "void rift" looking blast. Xerath's W would kinda be a mix between Malz's Q (the little portal the energy comes from) and the cone effect from Kassadin's E but in a radial pattern. and for Xerath's ult... well... only thing to do for that is giant blobs of Void energy. thats my thought on the skin..... also i think a Void Maokai would work as well btw
