The phrase "comes be" is an unusual combination of a verb and an auxiliary verb. It's unique meaning is not easily captured in one single antonym, and its interpretation largely depends on the context. However, some possible antonyms for "comes be" could include "goes away", "disappears", "leaves", or "fades". These antonyms emphasize the idea of departing or disappearing, as opposed to emerging or coming into existence. They also suggest a sense of the passage of time or change, as things that "come to be" may eventually cease to exist or be replaced by something else.