Meaning armor that you get from masteries, runes, items, etc. It doesn't affect a champions's base armor, or armor gained through abilities (passive or active). Armor pen is way too cheap and is too effective against non tank champions. Armor pen is supposed to be used to counter tanks. It shouldn't be free armor reduction against everything in this game.
Kãtãrinã2 votesUm runes/masteries/abilities are all counted as BONUS ARMOR for one. so only base stats would not be penetrated in your view.
IcyPepper2 votesAt least there's no AD equivalent of 
Fauxfire1 votesThat's a bad idea.
Actually wait I forgot how fair that is to single-target burst AD Casters (AD assassins) when their armor pen is useless because the enemy ADC built no armor but is level 18 and survives every burst due to base armor. And because 
is just so overpowered it's stupid and too gold efficient.
