Relay

Adamantine slab of a greatsword which essentially superimposes multiple copies of its holder onto the same plane through what is best summed up as pointer hacks and weird recursive references.
Relay is made from a small fragment of the stillborn godling sealed under Hauntfall. Its level of intricacy in circuitry is far beyond Epacsi understanding, weaving in seemingly endless layers of superimpositions to increase processing power. Several thousand layers have been mathematically proven to exist, but no evidence suggests that they stop there. The highest number of superimpositions replicable by Epacsi technology is four.
Study of Relay is what led to the concept of superimpositional entanglement.