Chances are high that each feature you create will relate to a number of cards. You can view cards related to a feature quickly and easily by following these steps.
First, open a card tagged with the feature you want to view related cards for.
Next, click the name of the feature in the upper left-hand corner of the expanded card.
The feature detail menu will open, and if you scroll to the bottom, you'll see a list of cards that are related to the current feature.