Is it permissible to describe something as "beyond magnificent" or "more than great" for the sake of hyperbole, knowing that Allah is described as "Al-Adheem" (The Most Magnificent/The Greatest), and that there is a magnificence for created beings distinct from the magnificence of the Creator?

There is no harm in exaggerating the description of a thing or person as "greater than great," for what is meant is the greatness befitting a creature, and it does not cross one's mind that it is greater than Allah. The greatness of everything is according to its nature, but absolute greatness belongs to Allah alone.