### Instruction: When did the Artificer class first appear in D&D
### Input: The artificer is a playable character class in the Dungeons & Dragons (D&D) fantasy role-playing game. The Artificer first appeared as a full class in the 3.5 edition of D&D and was introduced in the Eberron campaign setting. The artificer is a unique base class that reflects many of the core themes of Eberron.
### Response: The Artificer first appeared as a full class in the 3.5 edition of D&D and was introduced in the Eberron campaign setting.