It seems that nefarian is bugged on vanillagaming, do we have any idea about the drop rate for Mish'undare, Staff of the Shadow Flame,and Neltharion's Tear?
I noticed in your BiS list that you calculate that 1 % hit equals around 16 spelldamage as frost mage.
I have decent raiding gear and 500 dps on most MC bosses (2 min fights). My theorycraft addon calculates that for me 1% hit equals around 10 spelldamage. Even fully flasked and all consumables up my addon says 1% hit equals around 11 spellpower.