transformativeadjective
uk/trænsˈfɔː.mə.tɪv//-ˈfɔːr.mə.t̬ɪv/also transformational, /ˌtræns.fəˈmeɪ.ʃən.əl//-fɚ-/causing a major change to something or someone, especially in a way that makes it or them better:
the transformative power of art
The whole experience was transformational.