Really man this is great bulid for team help not for taking kills, but i think it's great:D

This guide is just wrong...

Oh boy...
Here's the thing, what the guy above me said is just about 100% true. Guinsoo's Rageblade isn't a good choice on Katarina at all, your wasting the benefits of the item because you need to be auto-attacking a lot to get max stacks and Kat isn't a auto attack champ. Your summoner spells choice for your second build is absolutely HORRENDOUS. Stick with Ignite + Flash plz. Also, your runes are not a good choice at all. The potency runes? What's up with that? Here's two good rune set-up's that I use. Also, Rylai's Crystal Scepter doesn't give you much power anymore either. Rylai's wasn't that good on old hat and is even worse now. The Rylai's used to be taken for the slow because it kept enemies in range of her ult since it had a higher channeling duration. Now the ult duration is lest so Rylai's isn't even needed anymore, stop buying it. There are quite a few other problems which I'm not gonna go thru one by one and address.

Marks: Greater Mark of Insight (These runes are used on basically every ap champ, so why aren't you using them? They add a decent amount of dog to your spells.)
Seals: Greater Seal of Resilience/Greater Seal of Vitality (Two very good choices for Kat)
Glyphs: Get Magic Resist glyphs here to help you survive a little more of the enemy ap's magic dog
Quints: Get Movement Speed Quints or Potency Quints. Movement speed quints are very good but pretty expensive. These quints help you escape ganks faster, help you juke, dodge skill-shots, etc..
Flat Ap Quints also work if you don't have the ip to buy movement speed.

I have also made a Katarina build. Check it out if you want too. I provide good info and explain why certain things are better on Kat than other things.

I won't say anything about the coding since it's kinda acceptable to me and I'm not a pro coder or good enough concerning the looks and the esthetic aspect of a build.

But the reason I'm posting this is because I can't stand seeing someone torture my beloved Katarina like this. Bad skill sequence (dude, either max Q first for poke or W first for easy farming), Bad Items (I mean what the hell, Guinsoo's Rageblade on Katarina ?!), Bad score examples (Wtf 7/10, 3/4, looks like you just got carried) and much much more mistakes and bad advices.

I won't even need to justify what I say. Just a quick screenshot of one of my latest Katarina scores will be enough.

And yes I got a double penta on Ranked, and solo carried my feeder team. This is the kind of examples you need to put to back up your build dude. I'm not downvoting now but you'd better change this build.

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