A Daily Quest is currently just win 5 battles playing X Splinter. There are six splinters: Fire, Water, Earth, Life , Death, Dragon. You get a random splinter for the quest out of the first 5 splinters. Thanks for the Hedgie link. I didn't know about the game.
A for @steemmonsters you missed out on some serious gains with Gold Foil Cards which had 2.5 - 5 times price increase after introducing DEC as an in game currency. (You can burn cards to obtain DEC)