Read Spellshadow (Proficiency)

After a body uses the spell probe spellshadow to discover and reveal a spellshadow (see "Spellwarp: Astral Magic"), this proficiency is used to examine the shadow and determine the identity of the caster and the circumstances in which it was cast. Only a basher familiar with the spell used and its parameters can use this proficiency.
A successful check reveals the identity of the caster. If a body manages to do that, a second check determines the time and place that the spell was cast. If these facts are discovered, a third check allows the cutter to determine the recipient, if any (if the spell has no recipient or this detail is obvious, this check can be skipped). Lastly, the fourth check determines whether or not a body learns the situation surrounding the casting of the spell. The situation could include details regarding whether the spell was cast in combat, as part of a deception, etc.