The phrase "rolled into one" means the combination of two or more things to create a single entity or concept. There are many synonyms for this phrase that can be used in different contexts. Some of these synonyms include blended, fused, integrated, merged, unified, amalgamated, coalesced, conglomerated, mingled, and consolidated. These words can be used interchangeably to express the same idea of two or more things becoming a whole. For example, "His talent in music and art are blended into one unique expression." or "The company consolidated its resources and operations into one efficient unit." The use of these synonyms can add variety and depth to one's writing.