Lunar Revel Galio and Cho'Gath Skin Concept
http://1.bp.blogspot.com/-IbhU9FUyUmw/UwAUWcu34NI/AAAAAAAAA4k/RziRHFyEDq8/s1600/MogushanWarden.jpg Weapons are for his recall animation, maybe slap some wings on there and change it up to look a little more like Galio and I think it'll be a really nice skin.
https://vignette.wikia.nocookie.net/villains/images/9/9a/Sha-concept.png/revision/latest?cb=20120904192352 Like the void, he would be corrupting the land around him. I think it would really fit Cho'Gath, and make a great skin.
Let me know what you guys think. I got both these pictures from World of Warcraft.