Talk:Kassadin/@comment-31543294-20180716065407/@comment-37308047-20181026122528

No, Double Slap. Sorceror's shoes has FLAT magic penetration and goes through a FLAT amount of MAGIC RESISTANCE, not magic damage reduction calculated from MR You have 18 MR? I have 18 magic penetration and now I deal true damage to you because your MR and my Penetration cancel out. You have 300 MR? I have 18 magic penetration and you now have 282 MR as far as I'm concerned. Sorceror's Shoes absolutely is more valuable on squishy targets than tanks but as for the relevance to kassadin's passive, the actual damage increase from penetration is still the same, but it's just reduced by 15% from kassadin's passive.