Wouldn't it be easier to get flat pen and just reduce their armor to 0 that way? I also think armor can go effectively negative with flat pen, but I don't know if you get bonus damage because of that. I think super minions have -30 magic resist, for example.
no, only flat reduction can take an opponent's resists into the negatives.
So pretty much only morgana/soraka/amumu/fiddle together will get somebody into negative Mres.
I have yet to see negative armor.
But isn't armor pen like effective armor reduction? I haven't looked at the code so I don't know how it works (I do know how our animation.Duration code works though).
Edit: guess not, thanks for answering
Level 1 Sona has bad resists, could we get her to negative?
Your armor value is recalculated based on those rules if its base changes while the debuffs are present. All percentage effects stack multiplicatively.
Penetration can only bring the mitigation stat to 0, Reduction can go beyond. Negative mitigation gives you a damage amp equal to the damage reduction you would have gained if you had positive mitigation with the same magnitude.
Armor Penetration is a buff that lets a single champion do more damage to anyone with armor.
Armor Reduction is a debuff that makes a single champion take more damage from physical damage.
What does this mean for reduction then? That there are wasted stats if you happen to have both % reduction and flat reduction on the same target, much like how it used to be with penetration? Would there be any huge gameplay implications if these were reversed as well?
Wasted is not the correct term, but yes, the end result of the calculation will be less than had it been Percentage then Flat.
I can't speak to whether the game would be better or not if we switched them, but it'd actually be a non-trivial change to make because of how the system is set up right now. I'd rather not get into whether it "should" or not; my focus is telling people what "is".
If I technically had 100% armor reduction on an enemy...
So pretty much only morgana/soraka/amumu/fiddle together will get somebody into negative Mres.
I have yet to see negative armor.
Edit: guess not, thanks for answering
Level 1 Sona has bad resists, could we get her to negative?
The order of effects are as follows:
1. Flat Reduction
2. Percentage Reduction
3. Percentage Penetration
4. Flat Penetration
Your armor value is recalculated based on those rules if its base changes while the debuffs are present. All percentage effects stack multiplicatively.
Penetration can only bring the mitigation stat to 0, Reduction can go beyond. Negative mitigation gives you a damage amp equal to the damage reduction you would have gained if you had positive mitigation with the same magnitude.
Armor Penetration is a buff that lets a single champion do more damage to anyone with armor.
Armor Reduction is a debuff that makes a single champion take more damage from physical damage.
Fiddle Passive
Amumu Passive
Exhaust
Taric Shatter
etc
I can't speak to whether the game would be better or not if we switched them, but it'd actually be a non-trivial change to make because of how the system is set up right now. I'd rather not get into whether it "should" or not; my focus is telling people what "is".
http://leagueoflegends.wikia.com/wiki/Armor_penetration
It is definitely not the case now.
IE, % then Flat would be different from Flat then %.
All flats are collected additively and applied.
All %'s are collected multiplicatively and applied.
Edit: for Reductions, not Penetrations. Just to be clear.