There is just one thing that bothers me....

In season 4 episode 2, there is a vision that bran has, which shows us the iron throne covered in snow and a dragon flying over King's Landing afterwards.

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At the end of s8e2, we see the knights of the Night king gathering infront of winterfell, but we dont see the Night king on his flying steed.
This makes me wonder if the attack on winterfell is just a distraction?
All the things that can stop the Night king are gathered in Winterfell, dragonglass, valeryian steel (Dragons perhaps? no one has tried it yet.) So why would he risk it all by attacking a fortress which could be his waterloo?.

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For that reason I think the sneaky bastard might be heading towards King's Landing at the same time, and kill cersei.

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Now this theory might be absolutly crazy because i probably missed a little detail, so if u'd please share your thoughts on this topic.