You can only tap it for mana while removing component counters, but once the deck gets going, this card is more of an excuse to roll a d20 than a mana source
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
Other factors for budding collectors include investment potential, many consider Pokmon cards a worthwhile and potentially fruitful investment, as long as you know what you're doing, though remember this is not investment advice
Capricious Hellraiser is a six-mana 4/4 with flying
Jhoira, Weatherlight Captain Speaking of Izzet loving to draw cards, here's Jhoira, Weatherlight Captain: Every historic spell that you cast (sagas, artifacts, and legends) gets you an extra card