Kofusai

'Kofusai , the radiant unroll is an artifact used by Spring.

Overview
It can be activated upon consent of both parties to wager something of equal or greater value than their own lives. (consent can be given either verbally or mentally.) Rolls a pair of dice, and players must declare whether the value will be even (cho) or odd (han). The person who guesses correctly gains whatever was wagered by their opponent. There is a secret trick to activating this ability by oneself, but in that case, the person would have to guess until they get the die's value correct, and since that carries far too great of a risk, this trick is not realistic enough to incorporate as a legitimate strategy. The is the same usage that Spring employed against the nuclear bomb in No.70.