Talk:Kog'Maw/@comment-115.64.177.102-20110922102054/@comment-3450702-20110923060241

To the poster above me: Flat magic penetration is more useful against enemies who don't stack MR. Reasoning: 100 MR is 50% damage reduction, so if you had 100MPen, you'd reduce his MR to 0, so now you're doing full magic damage to him. 200MR is 66% damage reduction, so if you had 100MPen, you'd reduce his MR to 100, so now you're still reduced by 50%. This is because the more MR you have, the less each point counts from a damage reduction perspective. Your build is good, but I'd personally take a Nashor there, maybe Bloodthirster/Black Cleaver or something like that, I feel you don't have enough AS with what you wrote there.