In the latest update to Heroes of the Storm, Jaina gains the very meme-alicious skin Dreadlord Jaina. In game, she still uses frost magic. It is also known that frostmourne was a nathrezim crafted blade. Would it not be swell if Jaina non-canonically created frostmourne?
Edit: Alot of people seem to get the impression that I believe that dreadlord jaina is cannon. I dont. This is purely fun speculation on a what-if scenario. I was wondering if this idea could be built upon previous ideas on jaina being a dreadlord. So stop saying that she isn't cannon, because that is obvious and is not the point of this post.