Commented
Posted a Comment: Dec 26th, 2011
"1. Base Armor+Items.
2. Armor After Reductions from status effects/skills/items.
3. % Armor Penetration.
4. Flat Armor Penetration.
in your build you would have around 10 mpen from runes, 10 from passive, 20 from boots, and 20 from abyssal, in addition to the 10% mastery.
at 50mres, the enemy"