Dwarves have an instinct for repair, an inherent understanding of how systems work, and a reputation for fearlessness. They're perfect candidates for the Fair's emergency response team.
Flying {3}{W}, Sacrifice another artifact: Aerial Toastmaster assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)
Flying {1}{G}{U}: Creatures you control gain shroud until end of turn.
They are cautious with their body language and facial expressions. Any stray movement could betray the positions of the troops they protect and cost many lives.
Return up to X target creatures to their owners' hands, where X is one plus the number of cards named Aether Burst in all graveyards as you cast this spell.
First strike When Aether Chaser enters the battlefield, you get {E}{E}. Whenever Aether Chaser attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.