Registration for the 2017 International Challenge April Online Competition has officially started for Pokémon Sun and Moon players. This competition will use the same rules and regulations as Pokémon Video Game Championship Series events, and you can even earn Championship Points toward an invitation to the 2017 Pokémon Video Game World Championships in August. Additionally, all qualified Trainers who play in at least three battles will earn Sceptilite, Blazikenite, and Swampertite Mega Stones, the items needed to make Sceptile, Blaziken, and Swampert Mega Evolve in battle.
To register, log on to your account from the PGL homepage and select Online Competitions in the main menu. You’ll then be able to read and accept the regulations on the PGL. You’ll need a Pokémon Trainer Club account, your own Pokémon Sun or Pokémon Moon video game, and a Battle Team of eligible Pokémon. Accept the regulations on the Pokémon Global Link by Thursday, April 27, at 23:59 UTC, and get ready to battle!
The competition goes from Friday, April 28, at 00:00 UTC, until Sunday, April 30, 2017, at 23:59 UTC.
To practice battling for the 2017 International Challenge April Online Competition, go to Festival Plaza in Pokémon Sun or Pokémon Moon, select Battle, and then Download Rules. You can then select the 2017 Championship Series regulations as the rules when you battle with your friends in Festival Plaza or via Quick Link.
Source: Pokémon Global Link