Board Thread:LOC General Discussion/@comment-6011944-20130410211922/@comment-173.180.48.111-20130425221413

All cards eventually lose value due to various reasons but the main two are:

1) More supply (unless limited) - the longer you wait to sell, the more cards people are drawing from the LCP packs and thus increased supply which leads to decreased prices\

2) Obseleted - As new more powerful cards are released, the older cards which used to be strong, are no longer the top desired cards for many decks.   This is why Kindred and Waltz has dropped...they are no longer the best cards to own in their element.