Some of the more sought after (read: expensive) cards on this list are: The original five Phyrexian Praetors Ragavan, Nimble Pilferer Atraxa, Praetors' Voice Skithiryx, the Blight Dragon The Brothers' War The Brothers War was the first official printing of serialized cards, and it was hot out of the gates with all 63 of the cards on the Retro Artifacts bonus sheet included in their sketch printings
Even this combination is vulnerable to Pestermite / Deceiver Exarch / Cryptic Command tapping, so this is still not 100%
Additionally, with access to blue, you can use Brudiclad, Telchor Engineer to turn your Rocks into a hoard of treasure or an army of artifact creatures, or even try to get a Mechanized Production win
This deck will have to prove itself more before these prices stabilize above their current levels though
If you do, discard the top 30 cards of your opponent's deck
There's sometimes two promos in there - and packs - so youre probably saying the cards are maybe 15 each