Instructor 
Instructor Overview
Instructor is an Artifact Set with maximum 4 star rarity in Genshin Impact.
2-Piece Bonus
Increases Elemental Mastery by 80.
4-Piece Bonus
Upon triggering an Elemental Reaction, increases all party members’ Elemental Mastery by 120 for 8s.
Instructor Availability
Where to get Instructor
Instructor can be obtained from Domain Reliquary: Tier II(from Spiral Abyss), Weekly Bosses, Normal Bosses and Elite Enemies.
Instructor Recommended Character
Instructor can be used by both DPS and Support role’s character. Following characters are recommended to use Instructor.
Recommended Characters for 2-Piece Bonus
Recommended Characters for 4-Piece Bonus
Applicable to all Support