He's been repeatedly nerfed several times, just because of Incredibly strong his kit, is since it has no counter play except for buying a pink ward, but even then he can still jump and kill you but you can see it. His kit is terribly designed and just making no sense. It's just a super burst champion that gives you zero reaction time to do anything as you'll be dead the moment he jumps on you since all his damage is instant. Talon's one of my favorite champions and I hate no being able to play him because of all the nerfs he received because of his badly designed kit.
I'd love to see Riot give him a Fiora size rework, I think theres a lot of potential to make him a Great, Fun and Interesting Champion to play.