So, I got the chance to play this last weekend with the game creators. I've gotta say, it's unlike any game I've played before, yet at the same time the general mechanics are familiar. It's a living card game, meaning everyone has access to all of the cards/expansions to build a deck, and a point value is assigned to each card, depending on how powerful it is. There is a 60 card minimum, and a 90 point cap. Meaning you won't be able to just fill every slot with the most powerful stuff. It's a very good way to balance it IMO.
Rather than bore you with all of the rules, I'll refer to their KS page with just 7 days left to back it. They just need a little more exposure to finish their goal (and maybe even a stretch goal or two? :) )
https://www.kickstarter.com/projects/punchitent/battle-for-sularia-the-battle-beginstm/comments