This is useful when dealing with removal spells or cards that cut threats from the opponent's
Key Cards Elesh Norn, Grand Cenobite Elesh Norn, Mother of Machines Elesh Norn / The Argent Etchings Jin-Gitaxias, Core Augur Jin-Gitaxias, Progress Tyrant Jin-Gitaxias / The Great Synthesis Sheoldred, the Apocalypse Sheoldred, Whispering One Sheoldred / The True Scriptures Urabrask, Heretic Praetor Urabrask the Hidden Urabrask / The Great Work Vorinclex, Monstrous Raider Vorinclex, Voice of Hunger Vorinclex / The Grand Evolution #5
Pikachu [Shadowless] #58 Pokemon Base Set Keep track of your collection value over time
The clip above has especially caught peoples eyes because of the kid in the cart, being surrounded by rack after rack of cards that this asshole is taking to sell at higher prices, as real customers try to take a pack or two before he snatches the lot
The above is the Level 1 way of thinking about it, however it will be a lot more involved
If youre hunting for Palkia ex youll also come across some very helpful cards
