[Skin Idea] Mortar Xerath

Battlecast is a bit of a letdown because right now Xerath has the potential to be one heck of a weapons platform. For visuals (sorry, I'd love to have a picture) think of a black metal cast scheme with few openings, these few openings emanate a orange, explosive glow.
Basic attacks are miniature missiles, charged passive auto is red instead of grey.
Q: Carpet bombs in a line (all instant and overlapping to prevent confusion)
W: Interlocking crosshairs, one counterclockwise, one clockwise signify the coming shell.
E: Shoots a missle in a line that explodes and stuns.
R: His chest expands to reveal a cannon that fires shells at target locations. Xerath recoils slightly with each shot and makes a loud booming noise.