julia-btw, u still hv time if u want to do Xmas miniglame (i think u can get 3 xmas cards guaranteed if u start n complete it.) its super easy, u only need to complete a bingo card rlly.
go here:
https://kpopsource.com/threads/christmas-card-minigame-event-announcement-and-a-voting.79911/
read the OP n follow the instructions, n i think ur set. but its ur decision.
ps i think calb or others will trade a common if u get a xmas card u dont want/they dont hv. i think nobody will complete a full set cos 24 cards total in only 3 days(n u cant trade xmas cards aftervthose 3 days.)