Talk:Magic penetration/@comment-4613541-20111128161628/@comment-165.154.36.148-20120501021054

I'm going to correct you Proton, as Sorcerer's Shoes MPen isn't unique for whatever stupid reason.

''Highest MR Reduction Abyssal Scepter 20 Malady - 24 Soraka's Starcall - 120 Heimerdinger's Turrets - 50 Morgana's Tormented Soil - 40 Karthus' Wall of Pain - 35 Amumu's Cursed Touch - 35 FlatMRed Total - 324''

''Highest MPen 6 Sorcerer's Shoes stack for some reason, it's not unique Sorcerer's Shoes - 120 Insight Runes - 21.21 FlatMPen Total - 141.21''

'FlatEffective Total (Without Percent Reduction) 465.21'

Keep in mind, that the MPen won't apply if the MRed would bring them below 0

'' Highest % MR Reduction Nidalee's Bushwack - 40% Trundle's Agony - 25% Kayle's Holy Fervor - 15% %MRed Total - 61.78%''

''Highest % MPen Void Staff - 40% Xerath's Locus of Power - 30% Arcane Knowledge - 10% '''%MPen Total - 62.2% Crystal Scar - 64.09%'

'%Effective Total (Without Flat MReduction) 85.55284% Crystal Scar - 86.275198%'

ANYWAY

Only MReduction works below 0, so the lowest MR you can make someone have, assuming it's a champion, they havn't built MR, and they have 30 base MR (most ranged champs for example) would be'' -294. ''

Now I'm going to hope I'm any good at math and that's all right.