Take Faithless Looting, for example: you draw two cards, but you have to discard two, and you used up the Faithless Looting
He certainly helps the decks strategy and can create multiple giant beaters with his Enrage ability, but the deck can easily function without him
While this deck has very cheap spells, mostly 1-mana ones, you have ways to manipulate the top of your library to ensure you always get the right spell for when your opponents try to resolve theirs, making Counterbalance a great rattlesnake effect
Disney Lorcana is set in the realm of Lorcana
The deck additionally features a number of acceleration spells including mana rocks (Chromatic Lantern, Gilded Lotus, Arcane Signet, Blitzball, Commander's Sphere, Sol Ring) to help accelerate out your spells and allow you to cast them ahead of curve, as well as removal spells and counter effects (many of which are costed to trigger Y'shtola) to deal with your opponent's largest threats