Display Darkmoon cards in one's inventory that could be used to create a full deck
Using the Altoholic DataStore database, list all Darkmoon cards accessible to the current character. This is useful to determine which cards need to be acquired (purchased or made) to complete a deck.
All cards found on the current faction in connected realms (via Altoholic's database) are listed. You'll need to visit all the places where cards might be stored (eg. character banks and guild vaults) to populate the database. Shared account data is included in the search.
Type /pddgui to display a window of available cards. Mouse over a card to view its tooltip, revealing which alt has that card.
You can also type /pdd to display the available cards in the chat window in a compact table. (This lacks the tooltips, though.)
This addon requires the installation of Altoholic to acquire the data.
The card icons may not be populated on first use. Re-open the addon to display them. So far I haven't figured out how to force the addon to wait for the server query to complete with this information before opening.