Infused with the fury of a wrathful, even maddened monarch and a sore loser, hitting one with the other causes the second ball to ricochet around uncontrollably for hours. Once the ball starts ricocheting, it is impossible to stop it until it runs out of energy. It may not seem that dangerous, but if activated in an enclosed space it can kill everybody in the room.
Traded by Artie to the Russians for family members in the Gulag. Artie never saw it again until his Soviet contact's son, Ivan, tried to kill him with it.