Remember: The more sides the symbol has, the higher in rarity the card is
While the Disney name can be a powerful factor in keeping things running, eventually, cards may feel repetitive, and without " meta " changes, the gameplay will, too
Tifa, Martial Artist* Another of the Final Fantasy 7 commanders, Tifa cares about the number 7, letting you get an extra combat if you hit with a powerful creature, a mark she can hit in games of 4 or more players without any special help beyond a couple other attackers
Alone, they'll quickly be chewed up by enemy forces, but if you can lay out a nice smattering of characters you can quickly overwhelm your opponent
Most importantly, rotations help keep the game affordable and approachable
But thats not all