Detecting an Aegis's Protection

[Berengar]

@Xavi

We ruled that an effect within an aegis had to penetrate after we (not any opponent: we, our characters) used a CrIg boundary item with zero penetration to burn down a rival covenant when we were at wizard's war with them. We even hurt the magi there, since the flames were mundane after the item had gone off and the covenant was in flames. We used to use that item to clear fields of stubs before planting. Turning that into a bomb was so silly for us that we replayed the session with the items being unable to work unless their penetration was equal to the aegis level. It screwed some of our own items we were using in the aegis (Less than a year since we bought them), but in general it worked better.

Xavi

This should have gone there: Using Enchanted device within a hostile Aegis ?

Cheers

EDIT: Enchanted devices by RAW (ArM5 p.98 plus p. 113) cannot contain a T: Boundary effect.