Since I'm absolutely horrible at shading, I'm not going to post any edits until we start a new sprite, but so far it's looking really good. I would say it's a Grass/Ghost with Levitate, Final Evolution of a 3 stage evolutionary Family with moves like Razor Leaf, Toxic, Leaf Blade, Shadow Claw and Slash. Its stats would probably be; High Attack, Good Defense, Average Sp. Attack, Good Sp. Defense, Low Speed, High HP. Probably a base stat total then of nearly 600 maybe 580.
Once again sorry for no edit