Shadowverse

I opened as many as 5 (free) packs, and that's where my experience with this mini-cash grab ended.

And why does nobody care about the card pool?

It's a dead game, and the developer is a [expletive]. Too much effort for too little reward. What's the point? You still can't get anywhere without luck or spending money.
But if someone kindly posts a list/screenshot of the candidates, I'll share my expert opinion.