Omnipotence

Omnipotence is a state of having every power. An Omnipotent entity can do anything (im)possible, (un)imaginable, (-/meta/pata/non)physical, (il)logical, etc. The sentence "Omnipotent entity can do X" is true for any X.

Paradoxes
Omnipotence creates many paradoxes, as many stuff that mess around with infinity do. Example: Omnipotent entity created an immovable object. Can it move this object? If yes, the object is not immovable, and it's creator is not Omnipotent. If no, it cannot do one thing, so it's not Omnipotent. That's why people usually add a limit to definition of Omnipotence, to avoid paradoxes.

Black Lord
Black Lord techically possess "every power". This means he's Omnipotent.