As I found in my time with this version of the game, cooperation is the singular key to victory, and thankfully thats highlighted both in the construction of the included player decks and the bespoke ruleset for this experience
When Elsa quests, you can exert a character of your choice, and with Anna in play, that character is also prevented from readying at the start of their next turn
Hes not the most capable card with his base stats, having just 1 Strength and 2 Willpower, but he does get an extra 2 Strength when hes Challenging, thanks to the Challenger +2 keyword
It's important for mechanics in Limited to be able to function well when they are contested, meaning that you can't make your deck entirely out of one mechanic
Lorcana Cards | Dreamborn.ink dreamborn.ink Deck BuilderCardsCollectionCreatorsDecksToolsSign inFiltersView 123456789+
Guesses below in the comments!