Aron Ralston’s Pocketknife

Origin
Aron Lee Ralston (1975 -) is an American outdoorsman who survived a canyoneering accident in southeastern Utah in 2003, during which he amputated his own right forearm with a dull pocketknife in order to extricate himself from a dislodged boulder. The boulder had him trapped in Blue John Canyon for five days and seven hours, 127 hours. Even after he freed himself, he had to make his way through the remainder of the canyon, then rappel down a 65-foot sheer cliff face in order to reach safety. At first he had thought that there was no way to get free until he remembered that he could break his radius and ulna bones using torque against his trapped and dead arm. Doing so he performed the amputation which took an hour with his multi-tool, which included a dull two-inch knife.

Effects
Can cut through anything. Extended use makes user want to remove own limbs.