Even discounting Skullclamp ($1.99) and Sol Ring (which is in every Commander 2017 deck but, as the most played card in Commander, is still worth $3.27, even with a ton of reprintings), the Vampire deck is overflowing with artifact value, with Door of Destinies being the single most valuable colorless card in in Commander 2017 at just under $6, along with Well of Lost Dreams and Blade of the Bloodchief, both coming in between $3 and $4
Players can pull an Enchanted Rare from a Starter deck, as I did at my local game store through Pete, Bad Guy
This one can get a creature back from your graveyard and draw you a card, and once it does that you get a pretty nice 2-for-1 This kind of fixing usually isnt great, because putting the card on top is a pretty massive difference from getting it in your hand or something
According to MTG Goldfish's price tracker, the card cost just $0.70 at the beginning of September, but now it's risen all the way to $6.23 - a spike of 790%