Here's a cheat on the same pattern so we can cover that Battle of Wits player: 2 6 = 64 2 7 = 128 2 8 = 256
Blue/Black isnt in style at the moment, but if it gets there youll find these in the main deck, no doubt
Wizard is a Token, Token Creature - Wizard card from the Magic The Gathering set Universes Beyond - Final Fantasy - Tokens (MTGSC-TFIN-0015)
Of course, they could exert for other reasons and avoid having to challenge, but if you can get something big enough of your own exerted, your opponents characters will crash against it and take themselves out
In the case of Elsa, Spirit of Winter, it helps that the card itself is also one of The First Chapters stronger picks, offering the power to freeze your opponents characters to stop them challenging your cards or questing for lore
Once during your turn, whenever an opposing character is damaged, your Pirate characters get +2 and gain Resist +2 this turn