Uh-oh, unless I’ve fumbled by reading roll… it looks like the Definitive Edition pdf are missing the Level 10 Intellego Vim guidelines (detect traces of powerful magic, detect recent presence of weak magic)?
Hope I’m wrong here because it’s well past too late to fix for the physical book, I’m thinking.
General: • Detect the traces of magic of negative magnitude up to the magnitude of the guideline used – 2.
So level 10, being 2nd magnitude, detects traces down to -(2-2)=0, which is any non-negative trace, which is what that guideline was supposed to handle. But it extends that guideline further, as you can use a higher base.
Yes, they’re not there, although Base 10 is used in the calculation line for Sense the Lingering Magic. It’s not great, but I think it’s minor.
Unfortunately, the level 10 guideline is the one used for detecting the Gift… and I don’t believe there’s an example spell using it in DE. Somewhat important for quite a few games.
Actually, that’s a different level-10 guideline. Not all the guidelines from other books were brought into DE; most were not.
Well, it uses the General guideline. Note that the spell was changed since core. It now says
The residue must be of at least zero magnitude.
Base 10 is 2nd magnitude. 2-2=0. Those match.
David decided to bring this one guideline in from HoH:TL because it expands the old InVi 10 to InVi general without losing the old InVi 10. But then listing both of them would be redundant, so he deleted the redundant part.