"Ah!"
Baron Vein screamed miserably, being besieged.
"Take it all, take it all... don't chase me!"
Baron Vein knew he couldn't hold all the treasures alone, so he tossed out six Dharma Artifacts for the world to scramble over, while escaping with one.
And three months later, people learned the names of each Nail-Head Seven Arrows; as the source Dharma Artifacts of the curse system, each held its own great power.
"Corpse Dog. Curse others to create zombie ghouls!"
"Hidden Arrow. A Slaughter Demon Sword that grows stronger by absorbing others' power!"
"Que Yin, the original model capable of creating other cursed devices."
"Swallowing Thief, devour others' lives to prolong one's own immortality!"
"Non-Toxic, the world's strongest single-target curse poison, both poison and non-poison."
"Purification, the only Dharma Artifact that can clear other curses."
"Foul Lung, a toxic substance for large-scale curses."
...