1. The Monsters Are A Product Of Dean’s Mental Illness
2. All Of The Events After Season 3 Are Part Of A Dream
3. Dean And Sam Will Die Together
4. The Winchester’s Bad Luck Is Due To A Few Smashed Mirrors
5. Gabriel Has A Soft Spot For Sam
6. Sam Imagined His Relationship With Amelia
7. There Will Be A Religion Based On Sam And Dean
8. The Pair Are Already Dead And Are Now In Heaven
9. Either Sam Or Dean Will Be A Messiah Figure
10. Sam Is Actually The Son Of Azazel