This article on balance highlights the returns of other risky investment options over 10, 5, and 3-year periods
Having the ability to exile cards from an opponent's library, and then cast those cards for free on a later turn can be an easy way to completely shut down an opponent's deck
Once you master it, though, it has the potential to dominate the other two decks by playing to its varied strengths, making it the best Lorcana starter deck for those ready to start building their own decks and capitalising on the games more complex card effects and combos
Many booster packs contain at least 3 Uncommon cards
The peak for this kind of removal is Attrition, which is borderline mass removal if you are playing the right deck
You unfortunately cant play Impostor Syndrome in an Aurelia deck due to its blue color identity