Reveal abilities of another mage [805]
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Usage:  USE 805 <target> <magical skill category> [aura]

Required aura:  one or more points of aura, as given
Required item:
Time to cast:   seven days

Used against another magician, this spell will attempt to
reveal all spells known by the other mage within the given
magical skill category.

If the target is shrouding his abilities, the aura invested in
USE 805 must exceed the shroud's aura, or the spell will fail.
For instance, USE 805 4 (costing four aura points) is required 
to overcome a three-aura ability shroud.