The other card, Mulan, Disguised Soldier, is also perfect for the early game, as you can play it to potentially draw into one of your many powerful items and create a chain of drawing more cards
As if thats not enough, Yuna also makes it so your other creatures can inherit the counters of their fallen friends instead of them fizzling when they hit the graveyard
Typically you are better of with proactive cards not reactive cards for recursion effects
This card may not be a game-ender on its own, but a combination of its high mana cost, in-world importance, and board-wide protection is sure to make a splash as soon as it hits the table
Keeping these choices simple was a key part of the design, according to Miller
Yet its not gone for good: on a later turn, you can cast it again from exile, this time for its full cost