The device uses the piece of Uranium to form a large, green, nuclear bolt of energy in the barrel of the device. You aim the device at a spot on the ground or a creature. If aimed at the ground, it forms a miniature nuclear explosion which has a 50 foot radius. Any creature inside of this radius takes 10d6 fire damage and 10d6 poison damage. They must also make a CON saving throw. If they fail this, they are also blinded and poisoned. They must make an additional saving throw at the end of each 7 day period thereafter. When they make a successful saving throw, the poisoned and blinded effects are removed.   If, instead, the weapon is fired at a creature, the creature must make a DEX saving throw. If they succeed, they dodge out of the way, but the bolt still detonates at the place they were previously standing. If, however, they fail the saving throw, they take instead 20d6 fire damage and 20d6 poison damage, in addition to the other effects of the weapon.   Finally, any creature which is reduced to 0 hit points by this device instantly melts into a puddle of burning sludge, dying instantly. The heat generated by the sludge ignites all flammable objects within the puddle or melts inflammable objects (i.e. steel).