Talk:Magic penetration/@comment-72.71.210.48-20130112075217

Alright this has been bugging me.

"All champions have 0 base magic penetration but can increase it with items, runes or abilities for a few champions. This cannot affect enemy magic resistance beyond 0 to deal bonus damage."

Then below that is:

"Flat magic resistance reduction can reduce a target's magic resistance below zero. For example, if an enemy with 10 magic resistance has their magic resistance reduced by 25, the enemy will have −15 mr"