Cho' Gath is a major help to the team with all the life he is able to have and the damage he can take. Most of his life will be coming from his Warmong's Armor. Also another small proportion of life will come from his runes and masteries.

The reason why I think he should have only health per level is because it provides him with a couple 100 extra life at level 18, the more health the better. The little extra health can go a long way or be really helpful later.

When playing as Cho' Gath you should think about how you can take advantage of his high life. So if you you add extra armor and life it helps every little bit, since late game you will have such high life armor will go really well with it. Another thing is if you do or don't want more armor you don't have to do what I showed in the masteries section.

Your first item you want to rush, no matter what, it should be a Warmong's Armor, so to help fill up part of the build get a Ruby Crystal as your first item because it will help every little bit. After that you get your first Warmong's Amromr you should start to build another Warmong's Armor, take advantage of the fact it has no unique. Once that is completed you may want to get a Warmong's Armor or a Warmong's Amromr depending how your team is doing. If they are starting to fall behind then you should for sure get a Warmong's Armor. BUT, if you want to harass more or make yourself harder to kill then get another Warmong's Armor like I said. When you get either one of those items you should immediately get a Warmong's Armor after that for that extra protection. From then on out it should just mostly be a few more Warmong's Armor then your build is complete. But if you don't feel like you should get another Warmong's Armor then get a Warmong's Armor

If all else fails and that doesn't work then in between any of those items in the build try getting a Warmong's Armor as a replacement. This should work pretty well but if it doesn't, get another Warmong's Armor because of its well rounded stats. You should be good from those two items, but they keep killing you and your team get a Warmong's Armor because of it's health, health regen, and everything else that makes the Warmong's Armor so magical.

When playing, it really doesn't matter what you get. I tend to space out all my spells as best as I can. Sometimes all even close my eyes and level a random spell. BUT the only thing is, in a fight, depending on what you chose you might want try picking up your keyboard and rolling it against your forehead, by doing that you should accomplish absolutely nothing.

I thought heal and fortify go together better than a drunk guy and a gun. Heal should be used for pissing your enemies off, for example they work hard to bring your health down and you just heal to make their effort a waste or you can have it just because it will suck late game. Fortify is good for trolling, premade teams, a few other things, and nothing else.

If you stick to the plan and do as I told you to do in the build you should do tremendously amazing early, mid, and late game. You will be getting really high scores like 2 / 5 / 3. As long as you stick to the build you will be fine. And if you can do as the guide says in ranked games you will rape the enemy team and your Elo will sky rocket.