QUOTE (Tanegar @ Jul 9 2011, 01:21 AM)
That's an interesting interpretation. I think I follow your line of reasoning: a mana illusion extends into the astral plane, therefore can disguise an astral form. Please cite a page reference, as nothing I've read implies that.
There is nothing explicit that it works but there are several rules about magic that make it possible:
- mana based spells work on the astral plane, or the physical plane, not both at the same time.
- you can create mana based illusions for every sense.
- astral perception is a sense
=> You can create a mana based single(or multi) sense illusion spell that hides what you cast it on.
Now the spell still has an aura. For the uninitiated this makes the spell above pointless. But with Extended Masking you can incorporate a sustained spell into your aura/astral form. Thus you are hidden on the astral plane.
So it is a creative application of the rules we have.