History
Doctor Doom developed and included these small darts to be shots from the tips of the fingers (not thumbs) of his armor's gauntlets. Each dart was a short-range projectile filled with poison.[1][2] The victim, if hit, could withstand the ill effects through sheer endurance. While Doom only seldom included this in his armor,[2] news of this weapon reached other people's ears even in the United States of America.[3]
Up-and-coming superhero Shroud raided Latveria solo in an attempt to murder Doom himself, and tried ambushing the evil lord in a forest. When Shroud proved able to withstand his first attack, Doom shot him these finger darts; Shroud, who had heard of the weapon, was ready and dodged them easily. Before Doom could prepare a new attack, Shroud confronted him.[3]