My best guesstimation would be that the rarest item to come out of this event, and I have no idea what it might be, there are still well over 100 of across all of the shards. And here is the bigger point, no one knows the rarity of any of these items because no one knows how many were taken. Someone at EA may be able to tell you how many of everything spawned, though doubtful, they can't tell you how many were harvested. Just this morning on GL we had a Blackrock infected Light Demon and this puppy just went off, probably blew up every 5 minutes for over an hour and there was spawn at every drop. I saw 8 wooden walls spawn myself and got 5 of them myself with 20 minutes. What really is going to come out of this is it is gonna make my IDOC'n a real pain in the butt when these houses fall because of the weight. As for the display cases, bad example I know of at least 30 in my guild alone.