Using Cinderella to heal Moana, herself, and other Princesses, allows you to be aggressive on the board, remove damage, and keep Cinderella safe
It's not a huge amount of value, but when you consider the fact that you have three opponents, plus anything you do, you can draw upwards of four cards and make four tokens by the time your turn comes back around
Using them to cheat out dragons
These factors have helped make Lord of the Pit one of Magic: The Gathering's most valuable cards in recent years, with a copy graded at a flawless Pristine 10 condition selling for $105,000 in January 2023 - smashing the previous record amount paid for a Gem Mint 10 copy of the card in September 2021 by almost $100,000
Transforming Thing in the Ice on Turn 3 or returning multiple Arclight Phoenixes on Turn 2 certainly looks unfair, since thats comparable to what decks like Dredge can do when theyre humming, but Izzet Phoenix is capable of playing the early turns reactively and turning the corner on Turn 4 or 5, or even playing a long game and leveraging its low land count and Faithless Looting to stave off mana flood for longer than its opponent