All the seasonal exotics from the year of Shadowkeep to the Year of Lightfall are inside the seasonal archives without their catalysts. Im assuming that their catalysts drop within the game from activities or something. The exotics for the final shape and year of prophecy have their catalysts listed in the season archive so i dont know if these drop from the world loot as they are not listed in the "Patterns and Catalysts" section of the collections. I know that I can get the Weapons themselves with exotic ciphers and i get acess to the year of prophecy archives after buying the complete collection. Im just not sure if the 3 remainng catalysts from the final shape are gated behind a 600 silver purchase for each one. Has anyone seen the Catalysts from the last 2 years drop in the world?