This happens through: Sets going out of print : When the Pokemon Company stops printing a set, sealed product and singles become scarcer over time Cards being graded : Every card sent to PSA or BGS is effectively removed from circulation, reducing available supply Cards being lost or damaged : Over decades, vintage cards are gradually destroyed through wear, water damage, and disposal Collector vaulting : When collectors buy cards to hold long-term, they remove them from the market 4
So when your summon's time is up and it goes to the graveyard, it's going to trigger Yuna, and she'll pop three or four +1/+1 counters onto another creature, powering it up
Booster Box Pokemon Dark Explorers Keep track of your collection value over time
2 Vilis, Broker Of Blood Vilis, Broker Of Blood is one of the best Mono-Black cards in Commander
Not a bad deal if you don't have Prime or you're not getting it anywhere else!