The Lucky Rabbit's Foot is a cut weapon in the Fallout 4 add-on Nuka-World. It takes the space... The Lucky Rabbit's Foot is a cut weapon in the Fallout 4 add-on Nuka-World. Characteristics Edit. It takes the space of a grenade, but adds 10% XP and 3 to Luck. Locations Edit. This item is unobtainable without use of console commands.