Niantic and The Pokemon Company have announced the final round of Professor Willow’s Global Challenge in Pokemon GO.

On September 1 and 2, trainers have to work together to fulfill the challenge requirements. If they succeed, they’ll receive bonus Stardust for catching Pokemon, hatching eggs, and even 3000 Stardust for every raid.

Besides Stardust, trainers will receive up to five free Raid Passes for Moltres Day, taking place on September 8. Moltres will reappear in Raid Battles worldwide that day for 3 hours and will know the move Sky Attack. Shiny Moltres may appear during the raid, if you are lucky.

Trainers,

The final challenge is here! It’s time to come together and work on the last round of Professor Willow’s Global Challenge, happening on September 1 and 2 during the Safari Zone event in Yokosuka, Japan. If certain areas of the world can meet the challenge requirements,they’ll unlock bonus Stardust for catching Pokémon and hatching Eggs—including a guaranteed 3,000 Stardust for every raid—starting September 3 at 1:00 P.M. PDT. Also, until September 10 at 1:00 P.M. PDT, Trainers can unlock a bonus to earn Star Pieces that will last for one hour!

If the challenge is completed, Trainers worldwide will receive up to five free Raid Passes for Moltres Day, which features the Legendary Pokémon Moltres! On September 8, Moltres will be available in Raid Battles around the world for a three-hour period and will know the Flying-type move Sky Attack. If you’re lucky, you may be able to encounter a Shiny Moltres!

So, get ready to GO! See you out in the field, Trainers!