User blog comment:Martialmaniac/How To Steal Your Devil Fruit/@comment-188.4.201.149-20150514204720/@comment-5780397-20150515224518

A Logia is still a Logia... and fire-related powers could suit everyone. I believe there are various types of fruit in that bag, not Teach's powers... The black curtain could have been just a trick to hide the true method for stealing DFs.