Unfortunately, its one of the best draw options in the deck
For example, there are cards that, despite being heavily skewed toward defensive use, contribute significantly to win rates due to their high power level, making them well worth including even in aggressive decks (a prime example being Force of Negation, a counterspell that is difficult to use aggressively)
Online marketplaces like eBay, Whatnot, PWCC Marketplace, and Goldin Auctions typically offer the best prices for PSA-graded cards
The mystery cards are usually 25 random common cards and 1 rare card, offering very little value
(For example, we still don't have Fifth Dawn cards here yet, and must still play with proxies of them.) Substantial Substitutes The best kind of proxy card, and the one you're most familiar with if you read the site enough, are the playtest stickers. Here is a playtest sticker of Quicksilver Behemoth used during Darksteel development: These stickers are printed directly from our card database in large numbers, and then we all sit around and stick them on the appropriately-colored leftover cards from older sets