Would be really cool to have a champion inspired by "N'zoth"

Im not good at designing but id jjsut love it if for the ult, you mark an enemy champion with corruption. That enemy will hear n'zoth whispering thing to him throughout a 5 second duration, similiar to illaoi. At the end of the 5 second duratin, the champion will break and be forced to rapidly attack allies near him for a certain amount of time.