Power Foci
Power foci live up to their name. They are very powerful
foci that temporarily increase your effective Magic rating.
That means they add to your Sorcery, Conjuring, and
Enchanting dice pools, along with any other test where
Magic is involved. Power foci can take any form, but for
some reason, rings and amulets are quite popular.
I might have to change things a bit with Character if Michael is right..