Perhaps it was a bit much in the Unleash the Hounds deck, but that has other problems that should be addressed elsewhere (and I see lots of threads already dedicated to it.)
More or less the Buzzard always has had a HUGE target on its back, and I've never dropped it unless I could get a card from it that turn. Sure that's strong, but a 2/2 that draws a card is just a little better than Novice Engineer, a fine card, but not really an overpowering one.
Hunter doesn't seem like it really has many pure card advantage engines, and making this thing one toughness, so it falls prey to anything that even sneezes at it. At that point, besides being a beast, Loot Hoarder seems like it is almost anyways the better card, since you always get the card for it.