Card delegation will be very similar to SP delegation on Steem. There will likely be some people who are just not interested in playing the game, and there will be some people who are very skilled at the game but do not have the funds to get all of the best cards. Card delegation will allow the first set of people to delegate their cards to the second set of people so that they still own the card but the player can use it to play.
RE: Beta Edition Update & Future Roadmap