With Rayquaza and the double XP event ending on March 16th, the next event to replace it has been announced.
Lugia will return to Raid Battles from March 16th to April 2nd and knows Sky Attack.
The Legendary Pokémon Lugia will return to Raid Battles in Pokémon GO on March 16! A powerful Psychic- and Flying-type Pokémon originally discovered in the Johto region, Lugia will appear in Gyms across the globe as the Legendary Pokémon Rayquaza returns to the ozone layer. You can challenge Lugia, which will know the newly improved Flying-type move Sky Attack, until April 2. So gather your strongest party to take on this Legendary Pokémon before it returns to the sea!
So if you missed out the first time, your time has come.
It's Black, Back Again.
If these aren't the coolest graphics...
Loco Motive, MySims: Cozy Bundle, Stray, Nine Souls, Servonauts.