I wasn't at the time you asked and I will not update it anywhere soon, but eventually the guide may get an overhaul!

are you still updating this?

Thanks a lot. I'm still overhauling the guide, but due to a technical issue I have not yet finished the update. Will do as soon as I get the chance though!

And thanks for your upvote.

WOWWWWWWWWWWWWWWWWWWWWWWWWW. You told me on my guide that I had an impressive use of BBcodes. I think yours is much better than mine. I'm still learning how to BBcode cuz, I'm bronze 5 for my BBcoding. I could really see that you spent a long time on this guide. Sometimes, it isn't about the depth of the information, but the work behind it. +1 for the great work.

Most Heimers indeed place their turret together and you can destroy them with your AoE abilities, but the point is that your Bouncing Blades + Sinister Steel combo doesn't instantly destroy them. You need to use one of them a second time or auto-attack every turret, which results in the turrets having plenty of time to attack you. Also, most of the time Heimer will have more minions in lane than you do and they also hurt in the early stages of the game.

Hmm.. guess what you said about Brand is right, but he needs to cast his skillshots to get his stun which is pretty bad.
As for Heimerdinger, you have 2 AoE abilities if he make his turret stay together. So for me, he's not annoying, but hard to gank.

On normal glass cannon Katarina, I wouldn't build Rylai's because there are simply put other items that make you deal way more damage. However, for tank Katarina it's perfect. You don't have to be the main damage source for your team, and the slow and health are actually really useful.
Why I consider Brand to be a hard matchup, is explained in the matchup sections. He has pretty high damage (both sustained and burst), and has a way to stop your ultimate. His only problem is that he relies on skillshots. If you can dodge them, he might be an even matchup (using his ult and sear still stops your ult), but you can't always dodge everything.
As for Heimer, he's insanely annoying. You can't dive on him because of his turrets, and he slowly whittles down your turret while taking every single possible creep. He also has a stun to stop your ultimate.

First off, why do you have Brand and Heimerdinger as counters? :/ And isn't Rylais not used on Katarina anymore?

First post reserved for the changelog!

Do note that the matchup section is not yet finished, but I don't have much time on my hands the coming weeks and already wanted to post what I have now.

26-06-2014 // Changed Rylai's Crystal Scepter and Twin Shadows to utility items, so I could make a little change to the cheat sheet which makes it look a lot neater than before.
Also ran my guide through a little check and added some things that should make everything a little clearer.