Hey Lucy,
welcome to #EveryNameCounts, and thanks for your question!
If you want a full answer to your question, you will most likely need to contact the archive directly (Submit your Inquiry - Arolsen Archives).
But I can give your first question: (I’ve collected information on the Lists from the CLI, you can find more general information here: List Material of the Central Location Index)
The Card is made from a Transport List (S 170, lower left corner), which was a collection of names of Persons released from Terezin, and transported to Switzerland (a total of 1210 Persons).
The List is located today at Yad Vashem, and digitised: https://collections.yadvashem.org/en/documents/9653797
(I’ve marked the entry in the list)
Lukas