Question: what to do after beating the elite four in pokemon sun?
Answer: Go catch all the Ultra Beasts. ...  Don't forget to catch Necrozma. ...  Get Cosmog, the cutest new legendary. ...  Grab the mysterious, one-of-a-kind Type: Null. ...  Collect the legendary Tapu Pokémon. ...  Check out the Battle Tree. ...  Get really into Battle Royal. ...  Visit Festival Plaza.