Veigar's Stun
As we all probably know, Veigar has some trouble placing his stun. Sure, you can trap them in, but it's incredibly difficult to make it land on them instantly, since they can see it before it actually appears. I feel like a solution would be to increase the delay to 1 second, but make it so that they can't see the cage until it actually appears, kinda similar to Ekko's W.