First blog post.

Welcome to my League of Math series bringing together 2 great things...

Lets get started:

League of Math Episode 1: How much is a Kassadin passive?

For those who dont know: Kassadins passive allows him to takes 15% reduced magic damage (and to move through units, but thats irrelvant now).

How much is that in MR?

Well first of all, since it doesnt fall under the negative self-stacking of MR (did I get that right? English is not my native lang.) i.e. having much MR makes buying more MR less effective (As Willb32764 explained in this post), it always reduces damage by 15%, so it acually becomes more effective at high MR-levels (please dont do MR-Tank-Kassa though - we already have Galio :D). But HOW effective?

Khnx KassPass

These are some pretty Numbers.

Or, more simple: Kassdin gains 17,6 MR + 17,6 MR per total 100 MR (Base of 30 counts!)

Or: Without items kassadin effectifly has 53 MR.

Please not that it actually become more effetive with MPen, because, MR is affected by MPen (well, duh), the passsive isn't (might do that some other day).

Spoiler alert: Next up is a VERY comprehensive Chart on the effectivenes of Penetration (BTW: Penetration is really good on Vel'Koz. For real.)

Feedback appreciated. (I dont care if you hate Math. I like it.)

Find speeling mistakes, keep em'.