I perused the forums here (because I remember seeing a thread about it months ago) and this thread to see if I could find the game I'm looking for, but alas, nothing.
Anyway, it's an Asian (I think Korean) dungeon crawl in the style of Diablo 3 that allows for spell customization. There are mutliple classes including a distinct card class that tosses tarot cards and uses magic combined with cards for combos. I know this is really vague and quite general, but it's all I can remember. I promise I'll book mark the page next time!