Talk:Karthus/@comment-16494910-20140209100720/@comment-5557556-20140221163556

First off you need to get mobafire, pro players, solomid and other guides.

When you are done with that you must ask yourself, what is the most powerful thing about Karthus?

Everyone will tell you it is his ultimate. How to make it more powerful? Buy more AP but there is one little thing, at level 3 it has a cooldown of 160 seconds. Well no problem I say. Let's see if we can fix this.

Lets say that you buy Morellonomicon as your first item. I know it is not that great item but you must look at one important thing. 20% cooldown is no joke. After that obtain Deathfire Grasp and net additional 10%. This is the point where Karthus becomes a living nightmare for his enemies. All you need to do now is to obtain blue elixir (wont be lost upon death like blue buff) and you will have maximum cooldown reduction.

Your spell cooldowns now look like this

Q: 0.6

W: 10.8

E: does not matter

R: 96

So, your Q now has a potential to be cast two times when previously you could only cast it once. That is a drastic DPS increase, not to mention that it will be harder to evade them when the bombs appear so fast.

Every 10 seconds you can extremely slow someone

And for ultimate, instead of waiting for 2 minutes and 40 seconds now you have to wait only 1 minute and 36 seconds. That is entire minute reduction.

For maximum ownage get every magic penetration rune, mastery and item possible, you are not obliged to get every single one. Rest of the build is not important, just get Morellonomicon, Deathfire and blue elixir. It is not a build for Diamond tier but in lower tiers it can work pretty good.

This build has some flaws ofcourse but which does not? Just give it a try, it wont hurt.