The tradesman who has all the cards to start with (6)
I believe the answer is:
dealer
'the tradesman' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for dealer that I've seen before include "Trader; card player" , "See 24" , "Trader; issuer of hands" , "Card distributor" , "Trader - distributor of cards" .)