These guys seem to be doing it on purpose to increase the prices
Artifacts like [mtg_card]Unstable Obelisk[/mtg_card] or [mtg_card]Spine of Ish Sah[/mtg_card] can give you reliable ways to remove problematic permanentsyou pay more for the effect, but if your color cant destroy a particular permanent, you take what you can get
Right-click on the card to remove all copies of that card from the list
The rarest cards in that set, like the Mega Gengar Ex Special Illustration Rare, go for over 1,000
(And if youre an idiot like me, who doesnt read the piece of paper with READ THIS FIRST before thinking you know better and shuffling the cards, theyre also numbered so you can put them back in the correct order.) Once youve played that through once, you can go ahead and shuffle as much as you want, and then play the game proper