Brigganock

Brigganocks are diminuative Fey about the size of a large mouse. They are miners who seek, not ore, but wishes. Wishes made without the use of a Wish spell coalesce in their mines into Wishstones . Good wishes made from the innocent and with good intent become sparkling uncut stones that glow with a golden inner light. They can be cut into gorgeous gemstones. Unkind or evil wishes become Dark Wishstones that glow with a malevolent purple radiance. The Brigganocks refuse to cut them, preferring to dispose of them into deep chasms, never to see the light of day.
Brigganocks are always accompanied by wisps of light which are actually their external souls. They are capable of speeding up local time around themselves, accomplishing mining in hours that would take a normal miner days. It is said that they have a wondrous city in the Feydark called Wish-Come-True, but no outsider has ever beheld it.