Why does Maw have Flat Armor Pen as a stat?
Rito: "Haunting Guise is kept deliberately niche because +15 M Pen can easily become 'mandatory'."
I feel like this might be a contributor to why it's at the power level it is at. +Flat Penetration is a deceptively crazy stat. More than that, it's just 'weird' for the defensive tech against ap burst item to have this quality.
. It is not enough it has MR, AD, and an auto magic shield, it also needs armor pen. Zed shouldn't have to decide between AD, defense, or armor pen. Also, I guess mages rushing zhonyas to counter his damage had too much armor.