Talon has Limitations to jump over walls but Kass doesn't on 2 seconds?
How is it balance for kass to have a free flash on a 2 second CD that does damage?
Not saying the champ is broken but him being able to flash walls every 2 seconds is kinda dumb. He has no risk to using it aggressively lategame other than using it on top of an entire team or getting stun stacked/bursted. Compare to fizz's E that has a longer one that you actually have to take in mind when to use it since it's his only escape.
Just my thoughts.