@Malintex_Terek:
Ubiq's said this before, but Blackbeard's dominion isn't just normal dark, it's void, gravity, and everything associated with "withdrawal" and "emptiness". His power is both literal and abstract, and something Oda has continually hammered down is that "abstract" Devil Fruit powers are the most dangerous, because they can be applied in tons of new ways.
He's the only Logia thus far like that, even his counterpart Kizaru has yet to show abilities on Blackbeard's level.
I don't understand what you mean when you say his power is literal and abstract, can you explain it to me?