Get your battle boxes and teams ready for the next round of Pokémon competitions. The 2017 International Challenge April has been announced along with all information necessary to enter the online event.

The battles will take place in doubles format and can only feature Pokémon found in Alola. To find this out, check the summary page of your Pokémon and look for the black clover symbol. Pokémon transported from previous games via Pokémon Bank cannot participate. Additionally, Zygarde, Cosmog, Cosmoem, Solgaleo, Lunala, Necrozma and Magearna cannot be used on your teams. You are allowed Held Items but they cannot be duplicates.

Trainers who take part in at least three battles will earn Mega Stones for Sceptile, Blaziken and Swampert. And those who place high enough in rank will earn points toward the opportunity of entering Pokémon World Championships. You may sign-up starting April 19 for the competition which takes place from April 28 to April 30.

Check out the full listing of rules and good luck to all trainers and their teams.