The reason rarity matters has nothing to do with deck building in Disney Lorcana or even gameplay, but rather it determines what cards players will get from a booster pack
Also as an added bonus, the rulebook doubles as a play mat to keep all your areas and cards organized
While cards from the main set are much less exciting compared to other Collector Booster boxes on this list, Agathas Soul Cauldron, Beseech the Mirror, and Moonshaker Cavalry all have admirable secondary market prices
As time goes by and Wizards releases new sets, more cards get released that screw around with the Exile mechanic, making imprisonment less than permanent
Mewtwo (the coolest btw) was only usable after you beat the game the first time which might make him the ultimate legendary because you had to prove yourself FIRST
If they are unlucky with the coin toss during their turn, they won't even be able to attack you