I've been using a couple of these in my rainbow control deck, and overall I've been pretty happy with it. Even if you get some weak cards, at least it's 3 cards for the price of 1. And pillars/pends don't seem to be any more common than the other cards; I think with the exception of the entropy bias, it's equal odds for all. I've seen rare weapons, too, but I've never seen squid/pharaoh/miracle, never seen a nymph, and never seen any of the 'other' cards yet.