You know what I hate about Zilean ult?
Its instant and it lasts 5 seconds. The "counterplay" to it is to "just not hit the one he ulted until it runs out".
But... you know what else lasts 5 seconds?
ult. Just that you can still hit and CC Trynda when he ults.
So by doing what you are supposed to do against
ult, you basically transform it into a better Trynda ult and if you dont, that target gets a Zhonyas active and comes back with full HP after.
I feel like it shouldnt have both, it should either be instant but have a short duration (like 1-2 seconds) or have a delay and last something between 4-8 seconds. Id prefer the first one.