Smart Custom Collections help you by automatically adding cards that meet the Smart criteria to this collection. You may create smart collections that at most one set, subset, team or player name. You may only create Smart Custom Collections when you first create your Custom Collection and may do so using the “Smart Collection” section of the Custom Collection creation form.
For example, if I collect Minnesota Twins cards and would like to create a Custom Collection for them, but don’t want to manually add all of my Twins cards to this collection, I could create a Smart Custom Collection that tracks the Minnesota Twins. When I did this, my smart collection would automatically add all of my existing Twins cards to this Custom collection as well as add any new Twins cards that I add to my collection automatically.
Smart Custom Collections can always be overridden, so if you want to manually remove just a few cards that match the criteria, ar add some that don’t, you may do so by adding or removing items as you normally would.
While Smart Custom Collections are completely optional they can save you a lot of time.