You'll probably want to play a bunch of sagas in a Yuna deck, but if you wanted to get cute with it, you could also take advantage of a sacrifice outlet and cards that come with tons of counters like The Millenium Calendar or Dark Depths
According to EDHREC, we see Ranger-Captain of Eos in 123,367 lists, which equates to around 4.5% of all decks playing white
While all Enchanted cards go for a high value, it's even more so for cards like Stitch, Carefree Surfer where the card is played in competitive decks
Outside of Sapphires tendency to ramp ink or mana quickly, or the ability to filter through a deck, there are a handful of similar bonuses from just having Detective cards in your deck
Meanwhile, the Through the Ages version is a reprint of Thrasios, Triton Hero, which is one of the most-played commanders in Magic's competitive cEDH format