The three stone entity(Domino 3) Want to do something nice for the three girls who saved Amphibia so she brought some back up gems to earth the girls saw it when they were star gazing and followed them The gems took them to a clearing and there was a bright light then in their place a three year old And I heard Domino 3 voice say Here is a present and blah blah blah take care of her she is the key back to Amphibia
(She has all of the gems powers) She can even make portals to Amphibia and back