This the best kat guide Ever.

Everything in runes is mana cuase Kat has serious mana issues. In fact with no runes and items and masteries, she has 0 MANA. Just Terrible.

Masteries focus on summoner spells i don't use (because theyre more important) and mana, (whci h Kat has SERIOUS Issues with).

Always go for killer instincts because its the 2nd ability and 2 is the best number ever. Death Lotus is just a terrible ult. As long as the enemy has milk and cheese they will always win.

Pros:
Everything
Cons:
How could dere be a con

I choose Clarity and Revive. Clarity will help you kill Baron and destroy their Nexus OBelisk while Revive will help use a summoner spell slot.

In teamfights make sure youre the lowest level (ideally 1), so theyll focus you and your teammates can do Dragon while theyre distracted by you.

Don't Farm. It reduces time you can win.

Make sure to get the Wraith camp because the happiness frim dying to them will make your team easily win.

Core items: Tear of the Goddess is absolutely essential. This will give you much needed mana regen and mana.

With this guide your killer instincts will be godly and you will win easily.

At level 1 you should try and destroy their shop. You won't die. After that make sure to solo Baron. Don't farm or try to level because your mana will take care of that. Since you have Baron now you should try and piss off your teammates to make them play harder.

Kat is just a great champion with this guide, impossible to stop.