https://www.gamespot.com/articles/new-pokemon-go-legendary-and-gen-3-pokemon-now-ava/1100-6456656/ >Another wave of Gen 3 Pokemon have arrived in Pokemon Go. Beginning today, February 9, players can find and catch more monsters originally from Ruby and Sapphire in the mobile game, while the Legendary Pokemon Rayquaza will be available for a limited time. >From February 9 to March 16, players will be able to encounter the powerful Dragon-type Pokemon as a Raid Battle at Gyms. Rayquaza is the third Legendary Pokemon from Gen 3 thus far, following Groudon (which was available from December-January) and the current Legendary Kyogre.