In many ways, it's better than a typical goblin lord
You'll still need one copy of the Outlaws of Thunder Junction printing to be able to use that visualization, but once you have that single copy in your collection, the game will treat it as though you had four copies of the card from the preconstructed deck
Also, because it says sacrifice instead of destroy, it can combo with some really fun stuff in Commander - such as when paired with Tergrid, God of Fright, who will then give you control of all of the other sacrificed creatures
While its in play, you get to reveal cards from the top of your library until you hit a Creature or Planeswalker, and then you put that card into play for free
Learn to negotiate Pretty much everything in life negotiable, and this includes collections which are "priced fairly/firm/whatever." While in my ideal world the seller would always ask a price that I feel comfortable paying, this isn't always (or even usually) the case