@RiotRepertior: When you rework Cass, please don't forget this:
Make the fact the she is pretty much 50% snake relevant in gameplay. Apart from poision snakes are known for two things: unhingeing their jaw and swallowing their prey whole and coiling around stuff.
Since no one wants to see her go full Kench (apart from a few sick vore enthusiasts I guess), you better go with the coiling.
It would fit good with the poison theme btw: poision enemy from distance until they are weak, coil around them -> root -> good old Noxian Finish (stabbety-stab!).
If she might have legs instead of a snake tail and still play technically the same way, you have failed with designing her character correctly imo.