Does anyone know what the deal with these is? I found one on top of a building at the start of Devil's Lair, one on a table next to the speaker, and one in the hidden cave under the downed helicopters (the unkillable hallowed knight jumped off the cliff). Each one gives a grimoire card entitled "Ghost fragment: (hunter/warlock/titan)", which all have an empty description and the word [Redacted]. Since getting these three hasn't resulted in any reward other than the cards, I suspect there are more of them, perhaps one for each race. Has anybody found more of them? UPDATE: According to user Kiwi357 in this thread, [url]http://www.bungie.net/7_WARNING-Avoid-Hidden-Swamp/en/Forum/Post?id=65382298#referred-Destiny[/url] there are, indeed, pieces that give you race based cards.