Talk:Katarina/Strategy/@comment-200.183.22.135-20120413195039/@comment-95.139.2.24-20120529070605

"Flat magic penetration cannot ignore the target's magic resistance to get below zero." - means if you have 40 flat magic pen and your target has 30 magic resist youll still do no extra damage. Theres simply nothing to penetrate.

Though, " Flat magic-resistance reduction can reduce a target's resistance below zero. For example, if an enemy with 10 magic resistance has their magic resistance reduced by 25, the enemy will have −15 magic resistance (causing him or her to take extra damage; see Magic resistance )."

There is a difference actually between Magic PENETRATION and Magic RESISTANCE REDUCTION.