I had a focus I wanted to create under teh sr3 rules that I'm thinking of having one of my new characters use when I finally get to play.
A divining focus- force adds to arcana for divining tests, I'm thinki9ng a family heirloom of a crystal ball or tarot deck.
I was also toying with an arcan focus that adds to all your arcana needs.
What do people think would be apropriate costs and bonding multiplyers, and the idea in genera;?

Divination is so GM dependent as far as what you get out of it that I'm not sure extra dice make much sense.

As far as costs, all of the metamagic foci so far cost 6 x force karma, but that's for much bigger advantages. I could see going as low as 3x.