Ready for a new challenge to take on in Pokémon Sun & Moon? The Weakness Cup has been announced and requires players to create a team of Pokémon that have 5 or more weaknesses! Some of those Pokémon considered too frail for normal usage may just get their time to shine. That’s not all though–players will also earn Ampharosite, Altarianite, Latiosite, and Latiasite Mega Stones if they participate in 3 or more battles! That means Mega Ampharos, Mega Altaria, Mega Latios and Mega Latias can be yours to use in Sun & Moon! The official site shares more details about the competition:
Registration for the Weakness Cup begins Thursday, July 20, 2017, at 00:00 UTC. The competition goes from Friday, July 28, at 00:00 UTC, until Sunday, July 30, at 23:59 UTC. Trainers will be limited to 15 battles per day.
It is also worth noting that according to Serebii.Net the battles will actually be double battles, not single battles.
Be sure to hit up the link for all the rules! May the WEAKEST Pokémon… WIN!