User blog comment:Don7/Blackbeard-Ultimate ability/@comment-4374114-20130305192434

There are many questions that are still left unknown on the Yami-Yami no mi, such as he may suck things into a black hole but he appears to always have to release them as well. Since people have already survived this it could make it easy for someone made of rubber to survive so long as not a bunch of sharp objects in there to ;)  Next, we have strong swordsmen like Shanks, Mihawk and Zoro who can attack from a distance that a black hole likely can't affect.  He may be able to try and block the attack but if caught unexpected or by a large attack he could be killed, which may be one reason not to attach Shanks.  The last thing I have been waiting on to see is if he were to suck in a sea prism stone would it nullify his devil fruit?  When he sucks things in, it's usually not in a very specific fashion but an all or nothing way, making chances of getting other things in there to possibly cause damage a possibility.