I like the idea of using overlaying 'magic ink' on decks to give an additional dimension under black light, but is there a drawback to the process? Does the ink over time lose it's magic? Does wear on the card cause the images to lose luster? I like to play with my cards and I have too many decks to keep duplicates for 'show', but I'm very interested in this type of technology and I'm thinking about using it in a future design. Thoughts? Impressions? Likes or hates?