Put in case what is needed for card games (4)
I believe the answer is:
pack
'card games' is the definition.
'pack' can be an answer for 'card' (thesaurus). I am not sure about the 'games' bit.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pack that I've seen before include "Fill (a suitcase)" , "Wolves, say" , "Collection of wolves" , "Put clothes etc into suitcase" , "Members of rugby scrum" .)