thoughts on a "Magic Thing"

[Ouroboros]

I love magic things. I even posted 2 magic swords, an awaken lab and a nasty mirror a while ago right here,
Caledfwlch, Mythic Sword
Gram, Dragonslayer Sword
Excitavit Locus, awaken Laboratory
Sólstafir, Speculum Labyrinthum, a Magic Mirror

My take on Magic Things is that there are a lot of them, and they can be created by a lot of stuff: great auras, magical activity, botches, whatever. The way I see it, there are many magic things laying around, but most of them hadn't been noticed.

@lvgreen

So what powers would it have?
What I would really like is that (similar to the Arch-chancellors' Hat) it can call up the ghosts of any of the previous Magi and wizards (those that left ghosts that can be summoned) who had used the quasi-silver bond cord.
But I am rather unclear where to start - Is the ghost summoning a Lesser of Greater Power, or even a Ritual Power?
How would I even design the quasi-silver cord ability?

I'd go the easy way with that quasi-silver cord thing: wouldn't a grant virtue: Major Potent Magic: Ghosts suffice?
With that and a few useful powers for ghost and spirits, the cloak would be quite useful (if cooperative, or nasty otherwise). Think that magical beings' powers don't need to follow hermetic guidelines (and suffer its restrictions). Some powers to grab arcane connections to ghosts and spirits can be quite handy.

About Lesser / Greater / Ritual power, I'd go for Greater: it's the most efficient, unless you want to have permanent powers, which would work through Ritual Powers.