Ok, I realize adding something like this would be tricky, but it would be cool if there were some kind of in game help / instruction manual to help out beginners.
To make it interesting, it could contain a codex which describes abilities and traits for all the cards that the player collected. It could also contain, for instance, storyline background on false gods or elements / themes in general to add some additional flavor to the game. Some of these could be made "unlockable". E.g. when you defeat a false god you get a background story / info added to the tome.
Just a thought of something to make the game more accessible to beginners, and to give more advanced players some new content to hold their interest.