After the battle with the Scorpion at the North Gate. The list showed I had received Istanboa Sandspouts Khanjar Not sure what that is but it never appeared in the backpack nor the bank. Also random Cards kept appearing on the battle screen, Had to hit ESC to goto settings screen to get the screen to refresh,
This item is an Athame if it helps narrow your search. Did you have a full inventory at the time?
The cards appearing on the battle screen is a known bug that we will be working to fix in an upcoming update. In the meantime (as a work around), opening your character window and closing it will dismiss the card from your screen.
