Legionnaire's Sparring AI

 is an artifact recommended for the Damage (Weapons) or Tank role.

Obtained from

 * Centennial Collapse Event - Artifacts Cache
 * John Constantine

Trivia

 * As the artifact is upgraded over time it changes its rarity, ranks 0 to 39 have uncommon, ranks 40 to 79 common and ranks 80 to 100 rare rarity.