User blog comment:Yatanogarasu/What Did Blackbeard Do to Get the Gura Gura no Mi?/@comment-3202520-20110101132829

it most certainly has to do with his powers more especifically is abilty to negate other devil fruit powers. my theorie is since black holes can suck everything is ability to negate powers is really an extremely low level of the ability to rob the powers of others so maybe he mastered that ability and if "sucking" things is the essesnce of that fruit he would suck like a vacum cleaner the powers of the enemies but there maybe a limit thats why he only used on withebeard, maybe after the time skip he has a hole arsenal of devil fruits.