Any time the words "for free" appear in a card's text, you have my attention
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
Magic: The Gathering is the most famous type of this game style, which is also known as collectible card games, expandable card games and so on
Arguably the best 4-ink character, The Matchmaker Unforgiving Expert destroys a lore for every challenge she makes, not every banish
This would represent her speed in-game and serve as a fun nod to Lightning (bolt). It may not seem very powerful, but perhaps she can be flickered or has an ability to flicker herself
This state-based action doesnt use the stack