>>54925952Beat the elite 4 then use the item finder 50 times in a circle around the exact square mewtwo was standing on, then one on that square and you obtain a special mist stone that evolves Mew into Chrono Mew. In fact I remember seeing a picture of this alleged "Chrono mew" in a magazine and it was Mew with a cybernetic half face kind of like the terminator. I have no idea where that memory came from because I'm pretty sure that doesn't exist.