You have the following items:
Guise (15 pene), Void (35% pene), Scepter (20 reduction)
Does reduction still come first?
100 becomes 80.
80 * 0.65 becomes 52.
52 - 15 becomes 37.
This means that with just items, it is impossible to get anyone with 21+ magic resist under 0.
Is this correct?
Some champions have MR reductions built into their kit as well. Karthus, Amumu, and fiddle to name a few off the top of my head
Reduction applies before Penetration in all cases.
That is a shame.
Thank you ^.~
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