The best creature types have formed officially-supported tribes, with Elf being one of the oldest and most popular of those tribes, from the 1990s to the present
Instead, it's a rather safe release in terms of mechanics, but offers a great range of products, covering casual, competitive, and co-op play, something that should be the minimum expectation, but hasn't always been the case with releases since
Notably, Yuna and Terras abilities focus more broadly on enchantments whereas Rydia is limited to sagas specifically
When you can exchange cards with low situational value: creature removal against control decks, surplus lands in the mid-to-late game, etc