Ok, predictions bitches. Jaym7018 better shut the fuck up and not talk about my prediction.
Nazis are going to use the information about the video skylar and walt made to hunt down walts family and kill Skylar and Marie.
Since walt is slowly becoming Gus, who was also a man capable of being good/bad I imagine things will go similarly with him as the did with Gus.
The ricin will be used to poison himself and the nazis that matter. Todd, Jack the other retard and Jesse. He will get close to them by offering to cook or some crap.
This will begin his death timer. Now hes in a race to kill lydia by placing a bullet through her head and her death scene looking up at the blue sky.
Just like Gus, everyone dies and thus all ends are tied. Blue meth no longer exists.
Walt jr develops a meth addiction and the show ends with him cooking breakfast for Holly.