Not quite the same thing, but I did come up with a "Goblin Magic" for general Wyldfae use sponsored by the realm of Faerie itself. My write-up:
This is the magic of the Wyldfae, which few of their teeming hordes master. Swearing allegiance to a Court revokes access to Goblin Magic, and few among the Courtless have the patience to master such subtle matters. It is potent, however, and has the added benefit of having no “oversight” such as is found in the capricious hands of the Queens. The power of Goblin Magic is drawn from Faerie itself.
Goblin Magic does not receive a discount for possessing True Magic forms like Evocation, but instead costs 1 less refresh for Glamour-wielders, and 2 less for those who wield Greater Glamours.
Channeling Uses
--Hurtful Words: Goblin oaths bite at the flesh of their targets. Can be used for Evocation-style attacks, which ignore all Toughness and Recovery powers upon a target who has broken a sworn oath to the caster.
--Invoking Faerie: While within the borders of Faerie, Goblin magic grows supremely powerful, and can perform Attacks, Blocks, and Maneuvers of almost any variety by shaping the matter of the surrounding area.
--Hedge Magic: Various minor effects can call upon the innate Wyld nature of a Goblin caster, such as a Nixie sorceress manipulating the flow of a water, or a Sylph calling on gusts of Wind.
Ritual Uses
--Curse Words, Wyld Shapings, Greater Hedge Magic: All of the Evocation uses can be performed at exceptional levels of power by a Goblin caster.
Banned Uses
--No Goblin Magic can affect or touch iron. Even the hurtful curses of a maddened Trollking can be swept aside by an iron bar, despite their immaterial nature.
--The Wyld nature of a particular caster may inhibit his magic as much as it enables it, so that a Unicorn may find his curses sliding off a virginal target, or an Ogre may have difficulty placing enchantments on things too close to his magically insulated flesh.
--No one who is not a full Wyldfae may use Goblin Magic—not Court Sidhe, Winter-sworn fetches, Summer-bound centaurs, or changelings of any variety.