@riot, it's from a while back, but I was wondering what was the rational behind this?
https://na.leagueoflegends.com/en/news/game-updates/patch/patch-711-notes#patch-malzahar
DAMAGE TYPE:
Attack damage dealt as physical, bonus damage dealt as magic⇒ Both components dealt as magic
It wasn't explained in the patch notes and doesn't seem to really have any impact on him going jungle, or support, if he were to go AD.
I'm sure whoever suggested the idea or made the call to change it, must have some recollection of an explanation.