According to legend, should a l'Cie fail to fulfil their duty, otherwise known as their Focus, they turn into a Cie'th, a creature damned to wander the world unliving and undying
That's the joy for them: gaining knowledge, applying that knowledge against worthy opponents, adapting, gaining new insights, and evaluating how to change their behavior to do better next time
This set is designed to be tons of fun for new and experienced players alike, with plenty of fun new and classic cards to collect and build decks around
The intended combos to win are between Gisa and creatures that can be given high power such as Soulless One (power = # of zombies in play and graveyard) or Unbreathing Horde (same as Soulless One) as both them can have high power which can be converted in large numbers of 2/2 zombie tokens by Gisa then brought back in play with even greater power, rinse and repeat
Of course, For reference, when the game first came out in Japan, it was an illustration of exchanging omnivorous land mine, Gray Mist , and Insect Queen