While Cinderella works especially well in decks that focus more heavily on princess characters, she also does let you trigger her effect by just playing her, making her a solid draw/ink engine in-and-of-herself
That means having a cost 1, 2, 3, and so on depending on the deck you want
There are lots of cards that care about a certain permanent being of the historic type in Dominaria , like D'Avenant Trapper
EPIC MULTIPLAYER BATTLESCommander is a multiplayer way to play Magic, an epic, free-for-all battle full of strategic plays and social intrigue
A white-aligned mana rock with huge upside will be an auto-include in tons of decks, not just flicker-focused ones
How about a tribal cube with archetypes for Goblins, Elves, Soldiers, Merfolk, or even some of the more obscure tribes like Cephalids and Dwarves