Each Overwatch 2 season adds a new Mythic Skin. These were previously earnable through the premium Battle Pass, along with their additional cosmetic options. Now, Mythic Skins can only be purchased from the Mythic Shop using Mythic Prisms from the paid Battle Pass.
The prediction for the Mythic skin for Overwatch 2 Season 12. #overwatch2
Each Mythic Skin costs 50 Mythic Prisms, and the three subsequent cosmetic upgrades cost 10 Mythic Prisms each. To get the most out of a skin, you'll need a total of 80 Prisms.
Here you'll find every Mythic Skin ever available in Overwatch 2, along with the season they released in, what they look like, and how to unlock them (if you can still do so).
As of this writing, there are 11 Mythic Skins in Overwatch 2, but only the one from Season 11, the current season, is purchasable: Ashe Calamity Empress. You can also purchase a Mythic Weapon skin for Reinhardt, the Bound Demon. Both cost 50 Mythic Prisms.