The phrase "transformative effect" means something that has the power to completely change or profoundly impact a situation or individual's life, often in a positive way. Full definition
We've covered browsers, but there are other apps that can have an equally transformative effect on your handset. (gizmodo.com)
Technology is going to have transformative effects not only on education, but also on politics — effects that will weaken the opponents of change and open the political gates. (educationnext.org)
It has been embraced by the educational community and has enabled students, teachers, and administrators to communicate broadly, easily, and instantly — with transformative effects. (edutopia.org)