How do you even deal with Kat?
Keep in mind: She killed my carry in under 0.9 seconds, several times with this build:

Did it matter that I ulted her as Malzahar? Fuck no- she just Scimitar.
Did it matter that her scimitar had a long cdr? Fuck no- Zilean ults her.
Did it matter that she messed up? Fuck no- she had a fucking Zhonya
Literally, everything that we could have done- was done. But this bitch built 3 damage items and killed my carry- like how do I even respond to this? I liked the old Katarina better- the one that like, you had to actually build AP items to do damage.