User blog comment:Krufix/Randomness fix possibility/@comment-75.75.170.166-20120409022310

So if I bought an Avarice Blade, took one quintessence of malice and one seal of malice, I would have exactly 12+1.86+0.42 = 14.28% crit chance. This number is important, because in the system you describe, I would crit every 7th strike (1/7 = 14.286%). I'm playing Graves and I'm level 4 at this point, having farmed enough for am Avarice Blade. I make sure I use my 7th hits on an enemy champion, and that hurts, because my crits hit for 133 before armor, ~100 after armor on a level 4 champion.

That means every 7th time I attack, I hit you for more than 10% of your health. You see the problem here?