I use it for Century Spice Road, the character cards of LOTR - Journeys, and for the planet cards for Astro Knights. No cards have autocombusted so far... fingers crossed!
The Spiel des Jahres (German Game of the Year) is the biggest and most important games award worldwide, granted annually since 1979. Its goal is to provide guidance particularly for family gamers in the ever growing gaming market. Since 2001 the “Kinderspiel des Jahres” (Children's Game of the Year) is also awarded regularly. With the “Kennerspiel des Jahres” a third award, aimed at more experienced players, joined the “Spiel des Jahres” awards in 2011. These awards are generally considered the most respected in board games. (Reference)