Jackalope's Foot

Wondrous item, uncommon

This small magical rabbit's foot can easily fit in the palm of your hand. A jackalope's head, carved from an antler, is attached to one of its ends. When you roll a d20 while this item is on your person, you can choose to roll an additional d20 (no action required). You choose to do this after you roll the die, but before the outcome is determined. You then choose which of the d20s is used for the roll. If you use the second d20's result, the item's magic is then lost. Otherwise, this property of the item can't be used again until the next dawn.

"Pfft. Can't be as lucky as all that. Just look what happened to its previous owner."