They are the most expensive Lorcana cards around, with some going for thousands on the secondary market
DnD & Tabletop Cards Spell decks, item cards, and campaign keepsakes
So, instead of painstakingly finding the probabilities for each hand arrangement, you can find the probability of drawing the target card in 6 random cards (for the example with 2 copies, the probabilities are dhyper(0,2,58,6), dhyper(1,2,58,6), and dhyper(2,2,58,6) for 0, 1, and 2 prized respectively)
And all the other players at the table see that that player can now ramp into something bigger, making them pull ahead early on and drawing focus
A wide board of 1/1s that cant punch through or drain out just sits there