Hidden Treasure

Hidden Treasure is a feature exclusive to Fire Emblem: Radiant Dawn, althougth it is basically an adaptation of the desert items system, which appears in multiple games of the series. Hidden treasures are items and weapons that can be picked up when an ally unit waits on the space the hidden treasure is hidden on.

The % chance of picking up a hidden treasure is equal to the units luck + the Biorhythm bonus (and then +60 if the unit's class is Rogue or Whisper)

The Biorhythm bonuses are as follows:
 * Best + 20
 * Good + 10
 * Bad - 10
 * Worst- 20