Bearnard's Talisman
A good talisman would be a silver hand (glove) attached to a staff, preferably oak (no benefits from the material there though). It might even act as a focus for some spells. If the hand (glove) was holding a gem or stone (ruby, crystal, aquamarine, jade...) it could be enchanted later with more effects.
(On a second thought, maybe a wand would be better. Sure, one can't block blows with it, but neither can you tuck it in your belt when you need your hands for something else. Since all the magi tend to be physically weak, a heavy staff could be a hindrance.)
The talisman would be the silver glove. It would be possible to attune the form & effect bonuses from the staff as well.
Vis costs
Description Cost Material silver 6 Size small x2 total 12
Form and Effect bonuses
Form Bonuses Item Effect Bonus Source Glove affect things by touch +4 ArM4 p.84 manipulation at a distance +4 ArM4 p.84 Silver harm lycanthrope +10 ArM4 p.84 oratory +4 WGre p.105 Intéllego +2 Mysteries p.44 Terram +1 Mysteries p.44 Wand / Staff control things at a distance +4 ArM4 p.84 destroy things at a distance +4 ArM4 p.84 project bolt or other missile +3 ArM4 p.84 repel things +2 ArM4 p.84