Discover always comes with a value, which is usually a defined number but can sometimes be defined by X relating to some other card or game statistic
In play, the Song will allow players to take two cards from their discard and put them into their inkwell
Not only does this make the card incredibly rare, but since theyre treasured momentos, theyre very rarely sold
Kindred Discovery [one_fourth_last stack="responsive"] [/one_fourth_last] Another new card that has quickly jumped in price, Kindred Discovery is great in any blue tribal deck as a reliable source of card draw
The face commander also allows for several sacrifice based combos and loops people are already running in EDH to begin with, so another piece to help enable those combos is likely also responsible in part for its popularity
These 15 specs are very very speculative given how little we know about the next set, but a lot of these are due a price increase regardless of what the new commanders do