The listing, Pokemon Xerneas or Yveltal code for Sun and Moon or Ultra Sun and Ultra Moon has ended.
This is for a code you can use on 1 of either Pokémon Sun and Moon or Pokémon Ultra Sun and Ultra Moon this code can only be used on one copy of either 4 games and can only be used once.
To use go to Mystery Gift on the start up screen.
Receive Gift.
Get with Code/Password.
then click yes to the following and you will brought to the Code entry screen.
input the code and you receive either Xerneas for Pokémon Moon/Ultra Moon or Yveltal for Pokémon Sun/Ultra Sun.
*Code is Un-used and valid for people in the US only im giving this code away because I live in the UK and is no use to me.