The Legendary Pokémon Kyogre and Groudon have officially returnedto Pokémon GO Raid Battles alongside Rayquaza until March 5. According to the development team at Niantic, the hatching of Pokémon Eggs is now influenced based on which of the three Legendary Pokémon is defeated. If Rayquaza is defeated more than Kyogre and Groudon combined, Pokémon that typically prefer windy weather (for example, Bagon) are more likely to hatch from Eggs from March 5 to March 16. If not, Pokémon that prefer sunny or rainy weather (like Trapinch or Lotad) are more likely to hatch. These Legendary battles will be tough, so developer Niantic has new special boxes debuting tomorrow, February 24, containing Raid Passes to help you prepare. Visit the in-game store to find out more about these special boxes.