Something people dont seem to be grasping about Armor/Magic Pen
I want to start by laying out some info people may not be aware of.
The following list is every single champion that gains ZERO MR per level

Every single on of these champs starts the game with 30 MR and thats all they get. Level 1? 30 MR. Level 18? 30 MR. As for the other champions, the absolute highest base MR out of any champion at level 18 is Kat (I don't know why) at 55.4
Let do a comparison with Armor.
I'll start out by saying the one single champion that doesn't get armor scaling is
because of his passive. Every single other champion gets Armor scaling. The absolute lowest base armor at level 18 (excluding Thresh) is Mini Gnar at 65.5, but he also gets 103 in Mega. So excluding him, the next lowest is Ori at 68. The absolute highest base armor at level 18 is Rammus at 104.5.
So what have we gathered so far? The lowest base Armor is roughly double the lowest base MR. The highest base armor is also roughly double the highest base MR.
OK? Whats your point?
I wanted to bring some attention to the issue arising that stacking 3 Lethality items deals true damage to squishies. Lets take a look.
+ flat Lethality reds = 64.4 Lethality.
Lets factor this into our equation. We also have to factor in Battering Blows. Lets go with a worst case scenario with Ori at 68 armor.
*68 Arm - Battering Blows = 63.24
- Obviously then 63.24 - 64.4 = -1.14 Armor
So yes it seems that you CAN do true damage to squishies at level 18 with this build.
BUT
Here's something you may not have known. Lets do the same thing with magic pen. Lets take the equally worst case scenario that half of all Champs have 30 base MR. We also cant forget the Piercing Thoughts Mastery. You also cant forget that Void staff ignores TOTAL MR, as opposed to LW items ignoring BONUS armor
-
30 - Piercing Thoughts = 27.9
-
27.9 - Void Staff = 18.135
-
18.135 - Sorc boots (15) - Flat Magic Pen reds (7.8) = -4.665 MR
#Congrats. You've been doing true damage to squishes for YEARS with 3750G worth of AP items
These debates are getting ridiculous.
People are so quick to point out that you can stack 65 Lethality
But neglect to mention that champs have >DOUBLE the base armor than MR at level 18 when you can use it all
Its not even like only tanks and initiators get high base armor at 18. Lux has 87. Cait has 82. Syndra has 83.
Do I even need to mention that you need to be attacking a level 18 target to get full use of that lethality when magic pen isnt gated at all at any level?
Do I even need to mention we are comparing 10K worth of pen items to 3.7k?
I know, I know "but
gives MR!" Pshhh. It gives less MR than
gives Armor. Plus Zhonyas is cheaper and has the better active
So next time you want to complain about true damage to squishies, please be aware that you've been doing it for YEARS. Weird how its only a problem now though, right? Weird how we've been okay with this for years but NOW it's "OMG BROKEN"
Does it make sense why AP/MR and AD/MR items exist, but no AD/Armor exists now?
At least mages actually get an AP/Armor item. It even has arguably the best active in the game tacked onto it.
Oh but I know. "AP itemization is SOOOOOOOOOOOOOOO bad". Yeah, sure thing buddy. Sure it is.
So please, next time you want to complain about the true damage to squishies keep in mind that AP is doing it for less than half the cost
Double standards at it's finest
is not out of the way
, while some need 2 and some times use 3. Even for the champions that don't need to rush Mana or CDR usually want up-front AP like
or in some champions cases
. The only champions that can do very well with rushing heavy magic pen first is
and some times
first.
.
CDR runes) , along with their generally lower base CDs
jayce
still gets their job done regardless of lethality items since they were building damage items to begin with.
which is a viable Buildpath on some Mages and a path usually kept in mind when balancing things. It's always a tradeoff since you neglegt ANY form of CDR or Mana building this way.