The phrase "most revelational" can be replaced by a variety of synonyms that convey a similar meaning. One such synonym is "most enlightening," which implies that something has shed significant new light on a topic or situation. Another option is "most eye-opening," which suggests that something has expanded one's perception or understanding. "Most groundbreaking" is another suitable synonym, indicating that something has broken new ground or set a new standard. Finally, "most revolutionary" can also be used, signifying that something is profoundly new and transformative. Ultimately, the best synonym for "most revelational" depends on the context and the specific connotations that one wishes to convey.