How does an "Anti-Item" Item sound
Hear me out. An item that you can activate to temporarily disable the use of an active item. For example I use it on a champion that has a Ghostblade and for an X amount of seconds they cant activate that item. You could bind it to the third item slot and it would work for the corresponding item slot of the targeted champion.
Or if that's OP how about it reduces the effects of the item instead. Like a 10% reduction in stats for a brief time or something. There's really nothing like that other than silences and I have a personal opinion that i won't be sharing.
This is just a thought. I just wanna spit ball some ideas. Not sure if Riot cares about fan ideas but who knows maybe this may spark an idea for something in the future.