Ah yes, here is a point where community can help a lot.
I like the basic idea.
Try to be original and also thinks about the story of PS when doing this.
Will the fact it\'s in a stalagtit will affects the game?
Will it be ruled by crystals?
Who invented this game in PS world (could be an ancient Diaboli, etc... his name could become the game name)?
In which side of Yliakum is the game played (some very hot place, some dark place, some place with bad guys, etc..)?
Also it\'s extremely important that the game is simple (and that\'s where I don\'t like your ideas Savion).
First because technically it will be easier.
Second because simpler concept are the best.
So, try to find a concept in your card game.
Is the goal to destroy all opponent card?
Prevent him from achieving an objective?
Well, good initiative.
Also remember it can also be something else than card.
In the universe of PS I don\'t know if thousand of cards can be printed.
What about stones as support, little piece of wood?
Anyway, it\'s fantasy, so if cards are more efficient, simply use cards

Edit: for the graphical side, we can take care of it

Keep the good work.