The card's only been spoiled in Japanese so far, but we knocked together the mockup below so you can check out her effect
Yuna is a powerhouse that buffs all of your enchantment creatures with useful perks, dealing overkill damage to the enemy player with trample while regaining life for each damage dealt with lifelink
Oaka, Traveling Merchant Surge is $2, FEA is $5 Tom Bombadil is currently the default commander if you want to build five-color Sagas, and that deck wants all the ways to remove counters at instant speed
Gratuitous Violence doubles the damage dealt by a controlled creature
After the subgame ends, each player shuffles their cards from the subgame to re-form their main-game library (and Attraction deck, if applicable), and they return to the main game from the point they left off, with Tug of War finishing resolving and the winner of the subgame getting their reward
Steel Overseer might just be the best of its type, with a simple but effective activated ability to give your artifact creatures a permanent upgrade every turn