Detect Ambush (Reversible)

This spell detects sentient creatures of hostile intent within range who mean to do harm to the caster by lying in ambush . It does not detect traps that will surprise the caster or individuals who might do harm to the caster if they were encountered; the targets of this spell must be expecting the caster to come and be lying in wait to harm him or her.

The reverse of this spell, undetectable ambush, makes one sentient being waiting in ambush proof against this spell or any other divination spell (from the school or the sphere) which would have the same effect. For example, undetectable ambush would prevent an ambush from being detected by a detect good or detect magic spell.

The material component for this spell is a possession taken from an enemy (not necessarily the one who is lying in ambush).