Here's a 180MB log with lots of throne loots. Sorry I was a puppets person but you can derive the observed drop rates on cards pretty easy. Install Notepad++ or something similar.
Change the Style Theme to Deep Black and Choose C# for the language, its MUCH easier to read and parse.
Search for --You have looted a a Blue throne.-- and the like.
http://imgur.com/zT1dZ4v