You can now register to battle with only Pokémon found in the Kalos Pokédex in the exciting Kalos Ultra Classic Online Competition! Trainers experienced the Kalos region first in the Pokémon X and Pokémon Y games, but for the Ultra Kalos Classic, you’ll need either Pokémon Ultra Sun or Pokémon Ultra Moon to compete. Don’t worry, you will be able to bring in Pokémon from other games via Poké Transporter.
You’ll need a Pokémon Trainer Club account. After you log in, you’ll be able to read and accept the regulations on the PGL. You’ll also need your own Pokémon Ultra Sun or Pokémon Ultra Moon video game and a Battle Team of eligible Pokémon. Accept the regulations on the Pokémon Global Link by Thursday, April 26, at 23:59 UTC, and get ready to battle!
The competition goes from Friday, April 27, at 00:00 UTC, until Sunday, April 29, 2018, at 23:59 UTC. Trainers will be limited to 15 battles per day. Junior Division players (born in 2003 or later) are limited to playing between 6 a.m. and 11 p.m., based on the easternmost time zone in each player’s country. All qualified participants in the Ultra Kalos Classic Online Competition will receive 50 Battle Points. Players must complete at least one battle to qualify.
Good luck, Trainers!
Source: Pokémon Global Link