There are two reasons to think that the uncaused-cause is intelligent or has a will to create.
A being or nature that is existentially necessary cannot be anything other than what it necessarily is since what it is is necessary. Anything that potentially exists is unnecessary and therefore cannot be considered to be an intrinsic part of that which is existentially-necessary. The first cause has to be existentially-necessary in order for unnecessary things to exist. But only that which is existentially-necessary ought to exist. That which is necessary is not potentially a sequence of physical events (it is not in a state of becoming something else) and thus the universe cannot be considered it’s natural end. Once an existentially-unnecessary thing exists it has to be sustained in existence because it doesn’t necessarily exist of it’s own accord or because of it’s own nature.Therefore if things exist other than what is existentially-necessary only an intellect and will can be considered to be it’s cause and sustenance, since there is no other reason for existentially-unnecessary things to exist.
The laws of physics is not necessary and physical laws only apply to physical natures. Physical laws do not exist outside the existence of physical things. Physical laws is just a description of regularities in physical things. Thus the reason why physical things behave the way they do can only be attributed to an intelligent cause, a being who has designed the rules of how physical things behave. Otherwise there is no logical reason as to why physical things must behave the way they do once they exist since none of it is existentially-necessary.