Detect Invisibility

This spell allows caster to see creatures that are:
 * invisible
 * astral
 * concealed
 * ethereal
 * hidden
 * invisible
 * out of phase

I doesn't destroy illusions nor it does reveal what method was used of concealment was used with exception of astral travelers in which case it shows silver cord. Invisible creatures that entered area after spell has been cast are not revealed.