This mod replaces Kassadin’s model with the one used until his visual update in patch 5.5.
Replaces the models of following skins: Base, Festival, Deep One, Pre-Void, Harbringer
Cosmic Reaver and any future skins will be left unchanged.
Since he had his new splash long before the visual update I didn’t replace it with the old one, but you can easily do it yourself.
Also replaces his ability icons. His particles worked a bit weird so I didn’t replace them.