While most Archangels names end in the letters EL, which means they are of God, Metatron is said to be an ascended master, his final incarnation as the Hebrew prophet Enoch. He was then transformed into an Archangel.
Whether or not this origin story is apocryphal, you can connect with the angelic healing forces of Metatron for your own evolvement as Spirit.
The tools of Sacred Geometry, which are communication from the higher astral levels to us incarnate on Earth, can be used in myriad ways. Metatron's Merkabah Cube is beloved by sound therapists and spiritual healers as they invoke Metatron and ask for assistance in clearing spiritual blocks, raising vibrations, and clearing minds to receive higher knowledge.