Gauntlets of the Songsmith:

The wielder of this artifact may sacrifice a spell component to power a non-mythical artifact adding an additional good like effect. Mundane: 0 mana Good: 2 mana Great: 3 mana Legendary: 12 mana The ability added to the artifact will match the flavor of the spell component. This may be used on an artifact once and the spell component ability can not be reforged, upgraded, or changed in any manner.