Was lurking the thread this week and just got into the game. Bought the whole Naxxramas solo game because I thought that I could dust all the cards I did not want. Turned out I was wrong so went and bought 7 packs to get some dust and hopefully a few good drops to get a zoo deck started. Think this qualifies. Old school TCG player in me says you can't dust that, but the card seems pretty terrible and I can actually put together a nice looking zoo deck for the 1600 dust I get.
I was trying to see what the chances of drawing a golden legendary card is and best I could come up with is absurd.