The Mercury card is still unattainable. A lot of Guardians have tried and failed after update 1.1.1. Bungie is aware though, and I'm sure they are working on it. Great job on getting to 2800! If you want help with the remainder of your Grimoire journey, ask me over at the link below. I shouldn't have posted this off topic remark on this post anyways. Haha! https://www.bungie.net/en/Forum/Post/101097919/0/0