I'm very excited about the story in Destiny. I'm seeing these Grimoire Cards as Mass Effect's codex. In each ME I would grab some snacks and read everything in the codex. In ME2 and 3 I even read about all the planets. I love backstory! I feel like these cards in Destiny are going to be very important to me. I don't know if you'll be able to access them in game; everything I've seen on them so far had referred the player to Bungie.net to see them. Hopefully they'll be accessible through the companion app. At any rate, I'll be reading all of them. If I can get them through the app, I'll use them as bedtime stories to drift off to sleep with.