Hi Flink, maybe that comment won't sound u very friendly cause I am getting annoyed about people LIKE YOU that because of they have a Katarina's build goes to the other ones to downvote for stupid things.
Who says that Kata is a spell vamp dependeant champ? YOU? That's not a reason for a downvote! I can go to your build and say that I think that Kata is an Armor dependenat champ and downvote it! Because i think it!
Then, I want to say you that I'm not saying this without any base. I know that you haven't read the guide cause you say "Mejai's, if you ever get it, is a FIRST item, not LAST.". I am getting SO ANNOYED with people who comment and vote without having read the whole guide. Like I say in item section (If you want to read a little bit, are only 4 phrases, not too hard for you I think): "Before explianing anything I want to say that in the Items Purchase Order Section you can see that the Mejai's Soulstealer is the last item. That doesn't say that it have to be taken the last one. I put it there cause it is a situational item, if a game isn't going very well don't take it and start the build like it's explained, but if it's going very well and you are getting feed, Mejai's Soulstealer is the first item you have to take."

Now I think you understand why the Mejai is placen the LAST and not the FIST!
Then I want to say you that I am now at mobafire, so I need to know how can I report you for troll vote cause I dont't know how to do it.
Thank You.

(Trollvotes, Trollvotes everywhere)

I also would say you to read the 2 troll votes that I have of people who have another Katarina's guides, that's disgusting, they only want to have their build in the top of the page instead of helping people with it.

I'm sorry man, but I won't do anything with the build cuase I'm starting to get a little bit anoyed about people that doesn't read before comenting and voting (like you).

Like I say in all the build and in other's comments of people who don't read all the guide, the FIRST build is the best cause is the easyiest to build, but the other ones can be played too casue the differnet of damage is not taht much so you can play the way u like more and you enjoy more. Like I said in the summary, start with the AP build if it's the first time you play Katarina, and then you can try the other ones.

Secondly, i want you to read a little bit, if it is not too hard for you, the first part of the Items explaination:
"Before explianing anything I want to say that in the Items Purchase Order Section you can see that the Mejai's Soulstealer is the last item. That doesn't say that it have to be taken the last one. I put it there cause it is a situational item, if a game isn't going very well don't take it and start the build like it's explained, but if it's going very well and you are getting feed, Mejai's Soulstealer is the first item you have to take."
Now you understand why I am getting an noyed, cause you comment without having read it saying "Mejai's, if you ever get it, is a FIRST item, not LAST." and I have to write all that I explained in the build another time. I also think that Lich Bane is a nice item for Kata, cause gives AP, Mr and the passive can be used with the autoattack after the Shunpo, and also can be used to destroy towers.
Man, I did this build cause I think that will be usefull for people who are starting playing with Katarina. But maybe is not the best guide in the world and that's why you are wellcome to suggest, but please, first read the whole guide.

Anyway, Thank you for reading (or watching the visual content)

Not voting, but I will downvote if something isn't done about this.

The last 3 builds are horrible and unviable, remove them please (I specifically explain how AP or hybrid is tons better than AD.

Stacking deathcaps wastes a lot of gold.

Stacking items should not be in your main builds (Mejai's, Occult), they are too situational; you can make mention of them in the guide for if you are doing well, but do NOT rely on them as core items.

As for your first build, Lich Bane is not a great item on Kat, and Mejai's, if you ever get it, is a FIRST item, not LAST.

Also, Flash is really helpful, trust me.

Runes and masteries seem in check though, except you should always take the point in the MS boost when you dodge in the defense tree and only 2 in Hard Skin.

No offense, I don't mean to be rude in any way, but from an experienced standpoint, all of these item builds are pretty horrible :/ You need to reconsider them, and probably get more game experience before you go making a guide.

Message me if you change anything, I would be glad to help you with any questions, but if this guide isn't changed soon it is getting a downvote from me.

Sorry dude, but this build is just wack...
Kata is a spell vamp/life steal dependant champ and you need the Hextech Revolver as one of the first items. And getting stacks as the last item?! wtftrol?!

Hi Repping! First of all thank you for reading ;)
I hope you liked the guide. I know maybe the 4th build is little bit stupid, but I tryed it, and it does work! (maybe a little expensive) Is just to get stacked the 140 ap like you get the 100 AD with bloodthrister when you build an AD Kata. I know that the AP build is the more suitable of the 4, like I said in the summary, but the 4 are effective, and you can play the one that you like more. ^^
i hope you rethink about the +1 :P. Also I was wondering if you can explain me what's "double snowballing" cause I don't know what does it mean xd
Thank you for your advices ;)

Hi, Tobgun.
Thank you for your suggestion unless they are wrong. First of all, I'm sorry cause misswrote The Armor Penetration Marks, I wanted to say Magic Pen Marks, but if u read the sentence before, you would see that I say that Katarina ALWAYS DEAL MAGIC DAMAGE.

Then, if you continue reading, you can see that there is a summary, where it's said that the best way (or easyiest) to play Katarina is the first AP build, but the damage difference between all the builds is not that much that you can play all of them, just choose your favourite and play it. So, if you want to take 2 stack items, you can, cause if you do it good, you will sure pwn.

The fourth build is not useless, is just another way to take high damage, I only want the 140 ap that gives Rabadon's to have that damage, is like you take bloodthisters in AD kat cause is the item that gives more AD.

About the thornmail, kata is a player that stays always behind your allies and then when everybody is attacking everybody, you go in and destroy all you can, maybe you will have time to get attacked 2 or 3 times, with 2600 HP and 150 armor you will have, you will be able to not to die and to deal damage with thornmail's passive.

Maybe you don't take enough gold because you don't play kata well, with Kata is very easy to take assist and kills becasue of her passive, with that you will get money and that 2 stacks that you don't like.

I know you also have a Kata's build and want the others to lose points and yours to win it. I'm not going to go to your build and give it the -1 because of that (unless it deserves it), I have done this guide because i think is USEFULL FOR PEOPLE who wants to paly Katarina and I hope they can see it because will be goo for them.
Anyway, thank oyu for reading, I hope you think about what I said you.

Ur wrong whit the AD Kat dmg on ArmorPen, Kat still deals MagDmg even when u get her AD Items, only place where she gets stronger is her Auto or Common Attack whit Armor Pen.

And 2Stack Items on her are kinda Crazy in my eyes becuse u are hell Squishy and u get Pwnd hard if u loose some stacks...

The 4rt Build is usless Rabadons doesnt stacks whit another one so u shoudl just delete it.

And if i am right in ur 2nd Build the Attack Dmg Quintessences are told to be Bad too, better to use Mag or Armor Pen but im not sure on that yet.

And Thornmail doesnt works on a low life Champ, u get to high dmg then u are able to reflect it.

And im not sure whit ur gold based... i played some 50-60min games n still had not that much gold for more then about 3Bloodthirsters, hope u know what i wanna tell u (cant imagine more then 2rabadons even if they would give a sense)
Well done looks good but -1 from me

Your first three builds are quite effective, however the 4th one is absolutely useless. Due to the change on Rabadon's, stacking deathcaps is incredibly ineffective and a player would be much more suited towards one of your other AP builds. Despite that, I love double snowballing on kat, tons of fun ^^.

Thak you ^^ See you ingame!