The 3rd set is called DWMI Ultimate collection. It came out in July 2013. The cards came with issues 32-52. There were 126 cards in total plus 5 special editions (4 flip-side cards and Silence will Fall). All the cards except Silence will Fall (476) came with the magazine. If you bought every issue you got every card. Silence will Fall was only available in to subscribers in issue 33. There were no tins or CDUs in this set. You didn't really need them as you only had to buy every issue of the magazine to get every card.
Here are the links to the 3rd set cards.