User blog comment:Dar'Rajhin/Skyrim: Hearthfire DLC Details Leaked/@comment-4975504-20120824205504/@comment-5280484-20120826013741

About teaching master Destruction Spells... I'd rather not have them do that unless it was Lightning Storm. I don't want my companion freezing my ass with Blizzard, or frying me with Fire Storm. I think I'd be fine with the Expert level spells though.