Friend Right now they are only useful for cactuar summons which give you extra cactuar cards to buff your cards . Ability they have two uses boosted fusion and buying cards from the ability shop . If you have the abilities you want , you might use them most for the former use . You can boost fusion on cards that don ' t have fodder like early access summon cards or that have difficult to farm fodder like a justfinishedrotation Sicarius . Summon these have a bunch of uses , but most people here agree that there are only two good things for F 2 P to use them on jobs and limited edition abilities . The current promotion FFX is the most expensive ever 56 summon tickets for one limited card , gacha , and the cards aren ' t incredible although IMO all four are good . I would definitely recommend saving most of your tickets , but I ' d also recommend pulling jobs for a ranger class . Right now you just have mages and warriors , and having one decent job for each class makes SP and events easier . In the meantime your top priority should be maxing out your favourite jobs preferably one of each warriorMageranger class and running the current event and tower if you ' d like getting to 50 gets you the main rewards , working through SP , and running MP for the Sicarius cards , which can be augmented without using Growstars and are at least as good as ordinary ST spells .