My mage is left at lvl 80 for when I did Herald of the Titans last year, and I was just thinking now if mastery could possibly be even better than int at that level. Does anyone know?
As far as I know you can't put mastery gems in level 80 gear anyway?
Other than that, I distinctly remember when the Cataclysm patch came out (before the expansion itself) which implemented Mastery and Reforging that I reforged all of my gear to Mastery and started doing some ridiculous damage as Arcane. I mean... on top of the usual ridiculous damage brought to you by full ICC 25 HC gear.