Artifacts

Artifacts in general are often historical or much-coveted items that are highly sought after within the video game they appear in.

As Weapons
In World of Warcraft, Artifact weapons were first introduced in World of Warcraft: Legion, in which completing the opening quest chain would allow the player to select a spec-appropriate Artifact to obtain through completing a short scenario (the others could be attained at later times). Artifacts could be enhanced by the use of artifact power, allowing the player to unlock new abilities and increase passive stats, although this was removed as a mechanic during build-up to the launch of World of Warcraft: Battle for Azeroth.