I am playing around with the idea that a Verditus mage created an invisible sword, for the purpose of bring an iron (possibly meteoritic iron, or something else stainless steel) weapon into a Faerie regio undetected.
However I am weak in both enchanting, and target numbers for supernatural abilities
I am under the impression that a bare Invisibility veil can be seen through automatically by a Faerie's Second Sight.
However, if the invisibilty effect is, say PeIm 25 (round numbers), and the enchanter can get a PeIm lab total of100, then 50pts of the lab total goes to enchanting the blade in one Season, and the extra 50 pts goes towards the taget number that Second Sight needs to roll against.
Or is is 25 pts for the invisibility, 25 pts for Penetration/Target number, and the other 50 pts means this boosted effect is enchanted in one Season.