When it comes to finding synonyms for the phrase "sets in motion," there are several options to choose from. For instance, the term "initiates" can be used to mean the same as "sets in motion." This could also be used alongside "triggers," another synonym that implies the initiation of a process. Additionally, "kick-starts" and "commences" can also be used to suggest starting or instigating something. Other related terms include "launches," "begins," and "starts up." All these alternatives could be applied depending on the context to provide a clearer understanding of the intended meaning.