Exiling cards from your deck is even worse, since the only way to get those cards back is to get a 20 on your die roll, and if someone destroys the enchantment, those cards are gone forever
There are a couple of genuinely fun pre-constructed decks in the rotation, and the game throws cards and gold at you for every little random accomplishment, so I could see a lot of Arena players having a perfectly successful run with the game without ever sinking a real dollar into it
When choosing blocks for creatures you don't control, you must still make legal choices
In other words, that's four mana of value you can gain the same turn she enters the battlefield
However, at the Disney Lorcana Challenge North American Championship, some details for the set appeared to be accidentally revealed, and were quickly removed from the Disney Lorcana marketing website