The ability to create anything from nothing.
User can create organic or inorganic matter from nothing either as finished objects or simply unfinished elements. As long as it can be defined as object, the user has the power to make it reality.
Attack Potency Scaling
Note that this only applies to the character's capacity to harm other characters if their Creation is connected to their other abilities; for example, it can be reasoned that a mage who can conjure a city with little mana can destroy one with the same amount of mana, however a character who can create objects without other ways of harming their opponents wouldn't be able to harness that power to hurt another character, and would fall under a light form of Environmental Destruction.
In case of creation of large and varied objects, such as planets, galaxies and universes, one should just list creation as ability without listing separate abilities for each created object. For example, while creation of a galaxy likely includes creation of black holes, Black Hole Creation should not be listed separately. An exception to that would be if the object in question is of particular relevance to the characters fighting style, i.e. if the character for instance launches black holes at his opponents.