Mewtwo may be leaving Raid Battles in Pokemon Go very soon, but another Legendary is set to return in its place. Giratina, the Legendary Ghost/Dragon Pokemon from Diamond, Pearl, and Platinum, is making an encore appearance in Raids beginning 1 PM PT / 4 PM ET on September 23, giving you another chance to add it to your collection.
Giratina will appear in five-star Raid Battles until October 17. As when it first debuted in Go, the Pokemon will be in its Altered Forme; this time around, however, you'll have a chance of encountering a Shiny version. As usual, there's no guaranteed way to ensure you encounter a Shiny Giratina, so if you're hoping to catch one, you'll need to be persistent and take part in a lot of Raids.
Giratina Raids will occur periodically at Gyms around the world, but your best chance to find some will be on September 25, when Niantic holds another Legendary Raid Hour. From 6-7 PM local time, there will be even more Giratina Raids occurring than usual, giving you plenty of opportunities to battle the Legendary. You can read more about Giratina's return on the official Pokemon Go website.
Giratina is set to return the same day that Mewtwo leaves Raid Battles, but that won't be your last chance to catch the Legendary Psychic Pokemon. Beginning September 25, Mewtwo will return to the invite-only EX Raids, and this time it'll know the Ghost-type attack Shadow Ball. It'll make another brief appearance in standard Raids on October 8, when it returns for a Legendary Raid Hour event from 6-7 PM local time.
In other Pokemon Go news, the game's Safari Zone event is now underway in Montreal, Quebec, Canada. To celebrate the event, Shiny Yanma is spawning in the wild around the world. Meanwhile, Pokemon Go's October Community Day is set for Saturday, October 12. This month, the featured Pokemon will be Trapinch, the first form of Flygon. A handful of Gen 5 Pokemon have also begun spawning in the game, and some require a new evolutionary item called the Unova Stone.