More than one "add your lowest ART twice"

Games Discussion Ars Magica
1

Hi,

I play a magus with diedne magic and a magical focus in fire.

If i do a spontaneous spell entering my focus, and have Ig 17 and Cr 12.

What is my casting total (just for the Form & Technique) :

  • 17 + 12x3 = 53
  • 17x2 + 12x2 =58
  • 17 + 12x4 = 65

And if i would have chtonic magic in addition?

Thanks for your answers!

2

17 + 12x3 = 53
You add your lowest art a second time for diedne and a third tine for your focus.