I have slivers available for trade. They are listed in my deckbox trade list. Have a look and if your interested...hit me with a trade option. I don't play with slivers so they should all be available. I did a quick look by typing in "sliver" in the search area and I have 14 different slivers going back as far as Tempest. No Sliver Queen...sorry. Have a look at my trade list. It is huge and the majority of the cards are pre-Core 9.
I will take a look thanks