Ok if you could tell me what you think now. I changed the runes i had from magic penetration to magic resistance and i took that point out of ardor and put one into Archaic Knowledge.

Yes i will make some changes according to what you said not all of them but some thank you very much =]

I'd take a point out of Ardor and put it in Archaic Knowlege, just because you don't have any AP or attack speed, so Ardor is next to useless, while Archaic Knowlege will make the damage on your cleaver more effective. Otherwise, some spelling/grammar mistakes, a few typos, things that you can easily fix to make this better. Also, if you're going to go full tank, magic resist blues are sensible, rather than more magic pen. Otherwise, if you could say why you don't take other things as well as why you do take some things it would help - for example, why don't you take ignite, or perhaps fortify. I personally agree with your choice, but some people might want some rationalization. Hope I helped :)

Well thank you for te suggestion i jus added atmas inpaler. And comment away what was the other thing you wanted to comment on?

While I do not think that tanky Mundo is the best way to build him, everyone is entitled to their own opinion.

I initially intended to have two suggestions for your build, but after remembering that you are going tanky I reduced it to one.

My only thought would be to drop Guardian Angel and get Atmas instead. It gives you additional damage based on how much max health you have, which in this build is quite a bit since you have Warmog's. Don't get me wrong. Guardian Angel is a good item, but it is more useful on carrys since they will be the ones targeted in team fights. Any enemy with common sense will overlook the tank in a team fight and try to take down your carrys since they will be the ones doing most of the damage and not you. That's where the Atmas comes in. It'll help you deal a sufficient amount of damage as well.

The other suggestion would have only impacted your skill leveling if your were going for an offtank build instead. If you want, I can tell it to you too, but seeing as you are pretty adamant about Mundo being played tank I'm not going to type it all up only to have you ignore it.

My bad i did not read the mana part just the hp part. It is fixed now thank you for the comment.

You take Strength of Spirit on Mundo. That's enough, by itself, to make me downvote this failure of a build.