The phrase "come to be" can be replaced by a variety of synonyms, each with their own distinct nuance. For example, "emerge" suggests a gradual process of appearing or becoming visible, while "evolve" implies a more complex and ongoing development. "Form" and "take shape" both convey the idea of something taking a specific physical or conceptual form, while "happen" simply connotes that something occurred or came into existence. "Materialize" suggests something appearing almost magically, while "result" implies a cause-and-effect relationship. Ultimately, the choice of synonym depends on the context and tone of the writing, but each option offers a slightly different shade of meaning to convey the idea of something coming into existence.