Relic
"If we want to conclude it arbitrarily, Artifacts are just items made from Frenzy Beast Carcasses. Also, their composition differs from the minerals naturally found in nature. This gives rise to a myriad of Artifacts in all shapes and sizes." Madam Rizenne changed the image on the screen, showcasing many items in red.
They ranged from a pin to a piece of slab. Madam Rizenne continued, taking a glance at the conditions of the students, "There is a famous example when it comes to Artifacts. Thanks to getting approval from Psychic Ancestor Marble, we can go into depth about this topic."
Her face brightened up, sporting a sense of worship, "The Unranked Skill created by Psychic Ancestor Marble, Marble Sonata can be used to mass-produce Artifacts. Depending on the Tier of the Esper wielding the Skill, the Tier of the Artifact they create varies. At Tier 1, they are red in colour."