I've been thinking a lot lately about this one thing in One Piece. During the Marineford Arc Blackbeard was able to take White Beards Devil Fruit power from him and make it his own along with the Darkness. This is the first time in the anime anyone has ever had 2 Devil Fruit powers. Now all of us who have followed this anime/manga this far in should know that the final battle between Luffy and Blackbeard will be at Raftel (Island of the One Piece) now I got thinking. Since Blackbeard has both Darkness and Earthquake Devil Fruits how will Luffy be able to beat him with just the Gum Gum Fruit? My theory is that some way a long the line Luffy will somehow get a second devil fruit power and I believe the Devil Fruit power he gets will be the King Of Pirates Devil Fruit, Gol D. Roger. Now we don't even know if Gold Roger had a devil fruit power or not at the moment but if he did then I believe that Luffy will most likely get the devil fruit that Roger had. This could be a massive equalizer for his fight against Blackbeard at Raftel which at this present moment in time is a pretty simple victory for Blackbeard even with Gear Second, Gear Third and Luffy's Haki. So does anyone think this could be possible and that it may happen?