According to Arabian mythology, Falak is the giant serpent that lives below the fish known as Bahamut. It was also mentioned in the One Thousand and One Nights as a dangerous monster. It is said that it only fears God's greater power and that prevents it from consuming all of creation.

Despite this, according to Islam, to describe Falak as omnipotent is wrong as either it is imaginary or the term is one which the religious should apply only to their god.

Read more about the Falak at https://mythlok.com/falak/