User blog:Legato Bluesummers/Blackbeards power?

Ok so i've seen what he can do and it seems he can creat a liquid like subtence (darkness) and can suck up stuff like a blackhole but doesn't completly destroy everything but that doesn't make any sence if it like a blackhole and he's also able to let it out but what i want to know is what happens to the stuff if he doesn't let the stuff out? please coment!