Originally Posted by tOxDeLivER
Just did a little reading up on how armor penetration works in this game.
Wouldn't it be better to completely forgo any type of flat penetration/reduction and just go for percentage based penetration?
My reasoning is that based off the items I've seen you'll never get a player's armor below 0 with flat reduction/penetration. This is because there doesn't seem to be enough flat reduction in the game, and penetration can't go below 0.
I've yet to see anything with percentage reduction so I doubt it could get anywhere close to 0. (Although, maybe it's possible to reduce the armor enough that flat reduction could possibly bring it below 0? Idk, doesn't seem likely, but I'm a new player so I obviously don't know too much about the items.)
This means that % Penetration is incredibly strong overall because the most damage you're going to lose hitting a character is 20% (Assuming you're using x2 Last Whisper, you could even make it 0% by adding in a Ghost Blade), but on the other hand you're going to be doing MUCH more damage to heavily armored targets.
The wiki article I'm using is here: http://leagueoflegends.wikia.com/wiki/Armor_Penetration
This would also free up a ton of red rune space, right?
So I guess what I'm asking is that would a build with no Armor Pentation/Reduction beforehand be good if you used the item set.
Last Whisper x2
Infinity Edge x1
Ghost Blade x1
Swiftness Boots x1
Phantom Dancer x1
Is this too gold intensive? You could use Zeal before Phantom Dancer?
Like I said, try to learn the items/mechanics. You can't stack 2 Last Whispers for that Unique Passive, and besides that build is VERY expensive.
It's good that you are theory-crafting, but it is much better to go into a game and see what you can actually do and obtain item-wise.
For example, you see that Ashe kind of does pitiful damage, early game. "A-ha! That is the reason behind rushing BF sword!" Or, Ashe runs really slow, and has problems kiting even with Frost Arrow. "A-ha! Hence the Boots of Swiftness!"
Now even the BoS is situational. If the other team has really hard CC, you should forgo the kiting/chasing/mobility advantage, and get the slightly slower Mercury Treads.
PD is great, but you can get by with Zeal, and get another BF sword to further up your damage. It all depends on the flow of the game.