"Mill" is a colloquial term that originates from the card Millstone, used here to mean "putting the top cards of a player's library into his or her graveyard." For example, you could say, "In the finals of the Pro Tour Qualifier, Herbert cast Tome Scour to mill away my final five cards, dashing my chances of playing on the Pro Tour." There are many players who will play with Tome Scour in their decks
Nonetheless, we still got something good out of this clunky mechanic
Track Your Trades No more manually adding values up
Arthur, Marigold Knight Arthur, Marigold Knight is similar to Winota, Joiner of Forces in that both enable you to cheat creatures from your library when attacking
For me, I would probably look at the current sales prices across a mix of websites and comparison shop to get the most accurate value of my Magic: The Gathering cards
They looked unlike any land or Magic card anyone had ever seen