Making mages colorful

[isf]

On rpg.net, there was a thread about magic that had an interesting colorful mage that I'd like to model in gurps (both this mage specifically and mages in general).

Generally, this type of mage seems more characterized by her relationship to magical entities and places than just what spells she can cast. I think that this type if mage is more easily modeled by spells as powers than spells as skills; though I am open to suggestions on how to encourage this in the regular spell model.

Originally Posted by Bailywolf

And I want magic to be interestingly fiddly. I speak the language of demons and elementals, and one day, my name will be a conjuring word, if I live to see my reputation extend into the Otherplaces. I carry a ha'staff, only a bit longer than a walking stick, but thick and cut during the final days of my apprenticeship from a lightning-struck black oak. When I can afford it, I will pay a smith to draw silver wire and bind it. When I aided the Ladies of the Pines, they granted me a small boon - a charm of bird skulls and amber, which I have affixed to its tip. The half staff grows with me, and allows me to focus my power in new ways. I have not told my companions, but when I was near death in the Deeps, I invoked a name given to me by my teacher - held in reserve all these years. I called upon the demon prince patron who he served, and pledged my allegiance in exchange for another chance at life, and new more terrible powers. As i get older, that pact weighs heavier on me. One day, I will confess to my friend the cleric, and beg his help breaking the pact. But for now, I need the power with the Northlings set to invade. From a shaman of the steppes, I learned the secrets of bone magic and blood magic and the magic hidden under the skins of monsters. I carry a set of knives now, and from slain beasts carve charms which lend me a measure of power. In Du'kir I smoked the dream leaf, and walked in the Otherplaces. I carry a carefully horded measure of the stuff with me now, and it is more precious than platinum (and certainly costs more). When demons or soul-seducers sing, the dream leaf garbles their charms. An essential tool in the mage's kit, for dealing with monsters able to enchant and bend the will. My small horde of spells, I guard as my most prized possession. Each was won at cost. Each has its own price, it's on dangers, but each is a potential victory when deployed with care and cunning, and the aid of my friends. I know ordinary folk fear me, even as my reputation in the Otherplaces increases. I can hire no servants, I can lead no armies, and no people would accept me as their king. Mine is a lonely path, I suppose. Perhaps that is why so many of my fellows go mad. The loneliness eats into you. But for now, I have my friends, and my familiar Beechum, and I plans for my tower one day, and the creatures I will conjure or spawn from my vats. One day, I suppose I might make new friends. But not yet. Now while the Northlings threaten.

This looks like:
Some sort of reputation in "otherplaces"
A named halfstaff
a boon that is an added enchantment
a perk (can make a pact with a demon prince)- used to get a patron/duty package
a skill to make charms from moster parts (something like rpm's charms)
Dream leaf- an alchemical amulet giving a will bonus