Very large card bringing comfort in hard times (6)
I believe the answer is:
solace
'bringing comfort in hard times' is the definition.
'very large card' is the wordplay.
'very' becomes 'so' (I've seen this in other clues).
'large' becomes 'l'.
'card' becomes 'ace' (I've seen this before).
'so'+'l'+'ace'='SOLACE'
(Other definitions for solace that I've seen before include "Comfort in time of disappointment or sorrow" , "Comfort in misery" , "Relief in affliction" , "Something that comforts distress" , "Comfort in time of distress" .)