Board Thread:Destiny Forum/@comment-8456133-20150810004516/@comment-1158256-20150810015523

Someone added it to the wiki back in March. I doubt it'll be in TTK. It might've been added here because someone saw it on DestinyDB.

The 2 faction reference seems to stem from a bungie.net forum post - https://www.bungie.net/en-US/Forum/Post/87899210/0/0 - where the person knows about it, but not enough detail to determine how to get it.