Regice was made available around the world in Pokémon GO Raid Battles until July 19. The Legendary Ice-type Pokémon has officially been replaced by Registeel until August 16 at 20:00 UTC, when it will be replaced by Regirock. These Legendary Pokémon can be caught only with the Premier Balls you earn from defeating it, so you’ll need your Pokémon to perform well in battle to maximize your chances. You can participate in Raid Battles even if you’re not high-level or if your Pokémon aren’t the strongest, but you’ll have an easier time if you prepare. For some reason, The Pokémon Company is now saying Registeel will be available until August 21 at Pokémon GO Gyms. Official word from the company regarding this is as follows:
Regice has retreated from Raid Battles, but a new challenger is approaching. The next Legendary Pokémon to appear in Pokémon GO is the Iron Pokémon, Registeel. The stout Steel-type will be appearing in Gyms only until August 21, 2018, so aim to catch one before it departs. Be sure to bring your friends along with you—thanks to a recent update, you may earn some extra Premier Balls if you do.
Source: Pokemon.com
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