Item:Raider's Reward Box

''A special gift of appreciation for successful raiders and true champions of Eberron and the Realms. Double-click on this box to pick your rewards!''

According to the Update 20 Release Notes, this item was granted to all characters who met at least one of the following conditions
 * You completed a Raid on your current life between updates 19 and 20. (excluding Chronoscope or Tempest Spire.)
 * You performed a True Reincarnation between updates U19 and 20.