Aaron's tuning fork

Origin
The Regisword is Jack Noir's signature weapon in Homestuck. He had a policy of offering the blade to anyone who entered his office.

This replica gained its power from the intimidation and respect Jack emanates.

Effects
The Blade's mere presence can weaken a God Tier's power. If it gets close enough, they will effectively be completely human. The God Tiers fear it for that exact reason, mainly because it's probably the only thing that can kill them, regardless of whether it was Just or Heroic.

Collection
Not Applicable. The artifact is still out there somewhere.