I've had this crazy theory for a while, but after seeing this trailer and having the time to digest it I'm thinking more and more that it could be true. 

So, here it is. There are three Targaryens in Westeros. Dany of course, who has taken her families seat at Dragonstone until she can knock Cersei's butt off of that Iron Throne. Then there is Jon who has been confirmed as a "Stargaryen" (Stark and Targaryen, son of Prince Rhaegar and Lyanna Stark). Last, but not least that leaves Cersei. Wait, WTF?!? How can Cersei be a Lannister? This is how...

In the books (and the show) Tywin Lannister was married to his cousin Joanna. This was the mother of Cersei, Jaime and Tyrion. Tywin Lannister and Aerys Targareyn (aka the Mad King) were best friends at one time and dirty old Aerys had a thing for Joanna. When Tywin and Joanna were married it is mentioned that Aerys Targaryen "took liberties with the bedding ritual," possibly invoking the right of Prima Nocte, a medieval ritual where a lord (or king in this instance) had first rights to bed the bride. Tywin was furious about whatever happened and the incident was one of many that led to his split with his old friend Aerys. Here is the thing (and it's a little crazy and soap opera-ish). Twins can have separate fathers. If a woman beds two men within a certain period it is medically possible that two sperm (one from each man) can get into an egg. I think Cersei is Aerys Targaryen's daughter and Dany's sister. However, I think Jaime is in fact only a Lannister. 

There are some who think Tyrion may be Aerys Targaryen's son. He's a dwarf and the Targaryens were very incestuous for years sometimes causing birth defects. Tywin specifically says to Tyrion that he cannot prove he is not his son. So, could be. I'm not discounting that theory at all. I love Tyrion and I definitely want him to be riding one of those dragons no matter what. Think about it though. Cersei is cruel (like the Mad King) and she just blew up part of the city killing loads of innocent people in order to become queen. (And the woman didn't even care that her son committed suicide because of her actions). That's the exact reason that Jaime killed the Mad King. He wanted to "burn them all" with wildfire rather than being overthrown. Like father like daughter, huh? Dany has shown these tendencies as well, but due to her upbringing and ability to have advisors that tell her no she reigns herself in. Cersei grew up in a totally different environment. She did not have a mother either, but she had the upbringing of a high lady and was always told that she was a Lannister and that people should worship her for that alone. She has no idea what it is like to be a common person. 

There are always three heads to the dragon and I think those are the three, but I'll be damned if one of Dany's dragons bows down and let's Cersei ride him. I think Tyrion is going to have a dragon that will eat her and spit her out. That is, after Jaime kills her. I guess I have to go ahead and explain that theory as well...

When a young Cersei visits Maggy the Frog in Casterly Rock she asks about her future and if she will marry the prince, referring to Rhaegar Targaryen. The woman tells her no, she will marry the king. He will have 16 children (I think) and she will have three. "Gold will be their crowns and gold their shrouds." And she will be queen until another comes that is younger and more beautiful (obviously Dany and I don't know why Cersei hasn't figured that out yet). Maggy also tells her she will be killed by the valonqar, "And when your tears have drowned you, the valonqar shall wrap his hands about your pale white throat and choke the life from you."

Valonqar is Valyrian for "little brother." Naturally, Cersei assumes this is Tyrion which furthers her hatred and distrust of him. Tyrion is not her only younger brother though. She is forgetting that though she and Jaime were born together she came out first with Jaime holding onto her ankle. That makes him her younger brother no matter how many seconds apart they were. So, Jaime is finally going to see Cersei for what she truly is and bring her down (sacrificing himself in the process) and then Tyrion's dragon will swallow her up, but spit her bitter ass out. 

As for a dragon for Jon, I'm not sure. Could be Rhaegal or Viscerion or it could be the mythical Ice Dragon hidden underneath the Wall. I'm still pondering that one. We'll find out more on July 16th. Let me know if you have any theories!

Courtenay | BAMF|  Mother of Dragons