Dispersal Technician | Creature | Vedalken Artificer | When Dispersal Technician enters the battlefield, you may return target artifact to its owner's hand. | Scott Murphy
Salvage Scuttler | Creature | Crab | Whenever Salvage Scuttler attacks, return an artifact you control to its owner's hand. | Tony Foti
Maverick Thopterist | Creature | Human Artificer | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
When Maverick Thopterist enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying. | Zack Stella