One Piece Devil Fruit Lamp - "Jiki Jiki No Mi - Magnet Magnet Fruit"
 
Until the fight with Big Mom at Onigahsima, the powers given by the Jiki Jiki No Mi were probably a bit underrated. When you look over to users with super powers, such as Magneto in Xmen, then youll probably wont loose the feeling that the user of the Magnet Magnet Fruit - Eustass "Captain" Kidd - somehow struggles to be the badass with his powers like Magneto used to be. Though he is one of the strongest newcomers and probably on par with Trafalgar Law, all he really does is just bringing some metal around him together and have it crashed into its opponment. That is luckily only until the fight with Big Mom, where we see a great improvement of the versatility of the Jiki Jiki No Mi, like creating giant moving objects, making object become polarized or even create a Electric Impulse Railgun with it. And still a feeling remains, that this super abilitys has some space for improvement.