How is it magic if the personality that brought the laws of physics into existence and is the source of all energy is able to manipulate those laws and energies to his own ends?
Because that's what magic is.
noun
[mass noun]
the power of apparently influencing events by using mysterious or supernatural forces:
suddenly, as if by magic, the doors start to open
Life, don't talk to me about life - Marvin the Paranoid Android