Card Identification Forum

 I have two cards that appear to go together.  They are from one of the Collector's Edge Excalibur stone sets, but I'm not sure which ones.  They are both acetate cards, the first has the Exca part of the Excalibur logo with a stoney background and part of the sword design in the upper right corner.  The other has the libur and Stone on it with a stoney background.  Both cards are completely blank on the back.  Any ideas?