Pokemon announced earlier this year that there will be giveaways of legendary Pokemon all year long. The current event is for two of the three legendary beasts: Entei or Raikou.
How do you get these legendary Pokemon? You go to your local Target between April 22-29, 2018 to receive the code! The Pokemon you will get will depend on what version of the game you will be playing, if you are playing on Sun or UltraSun you will receive Entei, and if you’re playing on Moon or UltraMoon you will receive Raikou.