Vares reminds Marie, "Any trap designed in that fashion would have to be negated by a countermagic. In the Magic Realm there is no Duration between Momentary and the Season; even a Diameter will last a Season, which can be used to advantage, making lower-magnitude spells more enduring."
OOC: PeAu might yield a low-pressure zone of "consumed air"--i.e. carbon dioxide or the like. Personally, I'd prefer it if it resulted in an actual vacuum, which is more "logical". After all, if PeIg can reduce temperatures, when it should be an Auram spell...
IC: "I've been thinking about the creation of 'counterfeit' Vis. If we had enough time, I could design a spell that could do it. I believe that a Creo Vim spell of third magnitude would be needed to simulate Vis itself."
He looks at Antonio, "Could you generate it? I could make the attempt, but it would take too long."
OOC: I'm basing this on the fact that sensing Vis is equivalent to detecting a third-magnitude spell. A CrVi 25 effect should therefore be able to simulate Vis (15 base, +1 magnitude for Touch, +1 for Diameter Duration).
I only just now got a look at Antonio's Arts (I try to avoid looking at other people's character sheets). Ye...gah. Some of his Art scores are staggering.
Why are we here except as a supporting cast?
Seriously, I can think of a number of tricks that might work, but most of them need higher Art scores to pull them off, or at least time to get the spells ready. Vis is next to useless with Spont. spells in Fifth Edition (I reiterate for the n-th time: I HATE FIFTH ED'S REVISIONS TO CANON!!!!! Arcane Connections are the single biggest exception), making that alternative not exactly viable.
A very, very important question: does Might act like Parma Magica in the stupid "pink dot" effect? This is essential if we're going to be battling creatures with Might.