Potential Breakthrough: Full Defense Parma

Not bad, but it needs a selector - if you can't work magic in your lab, it's not going to be much use to you.

This wouldn't work well.

The VoMS would destroy any spell active at his init. It does not continuously destroy magic. So it would destroy any protective spell, but wouldn't stop you from casting a BoF or a Teleport.
Maybe this would work as a continuous effect, but this is discutable.

=> You should double it with a PeVi effect that reduces casting totals