The phrase "came down" is often used to describe movement from higher to lower ground or a decrease in level or intensity. However, there are several synonyms that can be used to convey the same idea. For example, "descended" suggests a gradual movement downwards while "dropped" implies a sudden decrease. Other synonyms include "fell" which is more dramatic and "lowered" which can also be used in a figurative sense to indicate a reduction in importance. "Slipped" and "sank" may also be appropriate alternatives depending on the context. Experimenting with different synonyms can help to add variety and nuance to your writing.