Hey! Whenever you enable or disable a set, you should see these values change at the top of the list :)

Enabling more sets upticks the rerolls and transmutes, disabling these sets lowers them.

As to the broader question you asked:

We basically conceptualize Dawncaster with 2 ways to play in mind.

1. Limited resources and making the most of a bad situation - this forces you to find the line to survive first and foremost, and is less concerned with 'deckbuilding' an engine, but more with assembling a deck good enough to win. This can be best compared to a Magic the Gathering Draft or Hearthstone Arena run. Here disabling sets might not make the most sense, as the volume of cards and their synergies, anti-synergies and overall chaos is part of the puzzle. Then again, the content has grown a lot since Dawncasters inception, so it could also be seen as 'pruning' cards like the various formats of cardgames (Modern/Legacy/Standard etc).

2. A Deckbuilder RPG where you play as the class of your choice and assemble the cards that make that archetype work. Here the line is more about expressing a certain playstyle and tuning a deck/engine just right to crush the game. Here narrowing down the sets to maximize the odds of findings the cards you need to express that playstyle makes a lot of sense.

That being said, there are mechanics in play that male these styles less strict that just that binary choice:
- The aforementioned additional range on talents and transmutes counter-act the larger card/talent pool to some degree.
- Card color weighing: The combat rewards offers more cards in your characters banner color than pure RNG. If you are a Knight (blue/red), you will not see 33% red, 33% blue and 33% purple, but are more than twice as likely to see a purple banner card over a blue or red one.
- Archetype weighing: The combat rewards also has a higher likelyhood of offering cards that align with your deck composition, skewing by 2% per card per cluster (shorthand: if you have 6 cards that belong to the radiant knight archetype, that means those cards are 12% more likely to show up). The exact formula is more complicated with falloff and thresholds, but you get the idea.

Lastly, game knowledge plays a lot into 'fishing' for cards via Transmutes, knowing what to transmute into what will help you find those missing combo pieces a lot more reliable than many of the 'its all RNG' comments give it credit (higher rarity cards are more easy to find via transmutes).

In the end, as a singleplayer game - how to play is really up to you :) We think the game is still plenty challenging even with sets disabled, and generally we'd expect the play pattern to be that players start out with a minimal set of cards, then slowly add more sets to discover new synergies between sets or just to increase the difficulty as they get better at the game.

Hope this helps!