From 4th edition printing.
+2 LUCK BLADE: This +2 sword gives its possessor a +1 luck bonus on all saving throws. Its possessor also gains the benefit of “Good Fortune”, usable once per day. This extraordinary ability allows its wielder to re roll any single roll the wielder wishes.
However, the roll must be the last roll made by the player, and whatever the result is, the new roll must be accepted. In addition, a luck blade has a 5% chance to contain 1-3 wishes. When the last wish is used, the sword retains all of its other abilities
and properties.