Put in case what is needed for card games (4)

I believe the answer is:

pack

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'card games' is the definition.
'pack' can be an answer for 'card' (thesaurus). I am not certain of the 'games' bit.

I don't understand the remainder of the clue.

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" .)

I've seen this clue in The Times.

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