Playing Cards are a new weapon introduced in Fighters of Lapis 6. They can be used to summon weak-level assists that can be "played" anytime. Characters that are summoned can build Chemistery with the summoner if summoned enough. Not all cards have this ability.
Listed below are all the Playing Cards available in the store. They can also be found in chests and gotten from quests.
Some assists may also be listed here, and they will be weaker than their Crystal forms.