How do I add a tag to a card?
In the Library & Deck Builder page, press the label button under any card displayed.
A window will appear that will let you add any tag you have already created to a card.
Note: Take notice of the ‘For Trade’ tag. This tag will always be available and cannot be deleted. You can tag cards for trade so that others can search by your username and see what cards you may have available for trade.