The Shackled City
Pearl of Power 1st level
This seemingly normal pearl of average size and luster is a potent aid to all spellcasters who prepare spells (clerics, druids, rangers, paladins, and wizards). Once per day on command (standard action), a pearl of power enables the possessor to recall any one 1st level spell that she had prepared and then cast. The spell is then prepared again, just as if it had not been cast.