Cosmog is, technically, not a Pokemon at all but an Ultra Beast that got dragged into our world. They just also happen to evolve into the mascot Pokemon. Several Pokemon evolve with Moon Stones.

Of course, not all of them are in every single game ... Pokemon Sun and Moon Specialized purpose: To catch Ultra Beast Pokemon. It has a five times catch rate modifier against them.

Catching, Evolving, and Completing the Pokedex A Complete Pokedex in GO (June 2024) Pokemon with Special Evolution ... 60 Seconds Legendary/Mythical/Ultra Beast Raid Guides ...

Ticket holders get bonuses including up to 2 free Raid Passes daily, 5,000 extra XP for completed raids, and 1 additional Pokemon GO Candy from 4-star, 5-star, Mega, Ultra Beast, and Primal Raids.