There are a couple of decent questers with high Willpower and high lore value in this deck, like Robin Hood, Daydreamer and Starkey, Devious Pirate, but more often than not you'll get more value out of steadily questing with an unanswered Don Karnage than you will with an intimidating late game bomb
Magic Final Fantasy Art Series card list & price guide
Not only do you get a damage ping for each spell cast, but Vivi starts to grow and then gives you access to a bunch of extra mana, probably enabling your bigger spells for the blue/red archetype
According to Disney Lorcana co-designer Steve Warner, who told Wargamer a little more about the new cards, Vanishing has allowed the designers to push the boat out when it comes to what a Lorcana card can do, and how much it has to cost
There are also extra mana sources in commons like White Auracite, Namazu Trader, and Goobbue Gardener, suggesting that WotC really wants you to cast some clunkers