If youre using Ursula, Deceiver of All, to sing song cards costing three or less ink - such as Friends on the Other Side and Bear Necessities - then youll be able to perform their abilities twice in succession, which is possibly game changing
A players party includes up to one each of Cleric, Rogue, Warrior, and Wizard
Theres not really an alternative that does everything it does, either, making it very difficult to replace, especially in higher brackets
Blue is represented with the letter (U), simply because the color Black got the letter (B) first and the next different letter in the two words was (U)
They are definitely good enough to use, and as you'll see later, once sleeved the differences are even less pronounced
Worth it in my eyes, only buy if you can afford it