Gnome is a red creature type used for cards that depict a species of diminutive beings that inhabit the interior of the earth. They are inventive, and adapt at mining and tunneling.
The first and only card to bear the type and depict a lifelike creature was Quarum Trench Gnomes in Legends.
More often, gnomes are represented as artifact creatures, built by dwarves or wizards. When building gnomes, dwarves in particular adhere to the highest standards of construction; the gnomes themselves aren't as particular, using any appropriate materials to facilitate repair work and modifications. It is said, in fact, that if you leave eleven gnomes overnight with a room of parts, by morning you'll have ten gnomes and a new mechanical monstrosity.
Clockwork Gnomes were minute creations built by students beginning their education at Feroz's Wizards' School on Ulgrotha, used as servants on the Floating Isle. Steel, one of the Burning Isles was also inhabited by mechanical Gnomes.
Other examples of artifact gnomes are Copper Gnomes, Patchwork Gnomes, Ticking Gnomes and Bottle Gnomes.
Myr were originally designed as Gnomes