Your gateway to endless inspiration
the cardcaptor au i'm begging for is where damian and tim find the clow book, while arguing or smth they let loose all the cards, then make it a competition to see who can be the "better cardcaptor"
kero is just there, vibing with the ride (he gets unlimited snacks, and damian, especially, likes to spoil him). the boys hide kero from everyone cause what bat communicates willingly?? yeah.
they keep it secret from the rest of the batclan tho somehow JL dark/the more magically inclined heroes find out and have bets as to who will have most cards at the end and how the final judgment thing will go (constantine won by a small technicality, it irked zatanna and raven to no end)
tim and damian would also have opposite types of magic (like im thinking tim would lean more into moon magic while damian is more sun)
alfred knows whats going on as he helps cover for the two without their knowledge, even leaves extra treats and meals around for kero which the boys just sum up to "alfred knows all" *coughhe'syuecoughcough*
throughout the whole ordeal, the batclan is v confused as to why the two suddenly have a more... friendly rivalry going on because to them, tim and damian have a score as to who can solve more "cases"
bruce is concerned, dick is overjoyed, jason is sus but lets it be as long as they don't bother him, cass lq knows, steph and duke have bets about what they're hiding