Pokémon Go has detailed the finale of its summer event schedule – a global “Ultra Unlock” which will bring legendary Pokémon Mewtwo to regular raids for the first time. Up until now, the elusive creature has only been available in invite-only EX Raids, which for some players are hard to trigger.
This event comes after dedicated raiding days for Articuno, Zapdos and Moltres, all three of which will return to legendary raids from 13th to 20th September (and once again have the possibility of being Shiny). UK players, bear in mind the event begins at 1pm Pacific time on the 13th (which is 9pm UK time) so the first legendary bird raids will pop here from the morning of Friday 14th.
Mewtwo raids will then take place from 20th September (again, from 1pm Pacific, so actually the day after) to 23rd October.
Source: Eurogamer Pokémon Go ultra unlock brings Mewtwo to regular raids