If, of course, this deity is imaginary..
To me, all the deities of every religions have been imaginary, based on people's fear and ignorance.
It is both fear and ignorance that contributed people in believing in superstitions.
I don't know how many religions, but the I have read on and done research on, I really don't see any differences between the Abrahamic monotheistic god and that of any polytheistic deity.
There are nothing more special with Yahweh and Allah that come from other religions. And there are nothing special about the Qur'an, Bible and Tanakh that claim of the one god.
The differences between the Abrahamic religions and that of others, is that religions like Christianity and Islam have perfected the art of manipulating people, using their fear and ignorance them.
By pretending they speak for God, they have the power to do what they want, and get people to do what they want. Muhammad is a master manipulator. He used people to get what he want, power, prestige and revenge upon those who rejected him.
I really don't see Allah exist any more than Enhil, Ra, Amun, Osiris, Zeus, Odin, Vishnu, etc, do.