Can you MuVi to change a spells range to Personal?

Games Discussion Ars Magica
9

I don't see why it wouldn't work.

  1. BoAF is R: Voice
  2. If you can fast-cast, you can affect another magus' spell with MuVi (you'll have to penetrate his penetration though).
    2b) No requirement is made of the co-operation of the other caster
  3. MuVi allows you to change a parameter by 2 steps, up or down - Personal is 2 steps below Voice

It has been previously suggested here (and commented a bit following).

mind you, fast-casting a MuVi spell to take down another spell by 2 steps is hard - if I recall correctly, you can't actually do this with BoAF simply because you need to match twice it's level, which would be 70+ and as such necessarily a ritual.

It's much more doable with eg. PoF, but you'd still need to penetrate the original caster's penetration with a spell twice his level.