From LSWiki
Perform Kenning
Riddlemaster Esoteric Maneuver
Usage: perform kenning [on <target>]
Requirement to Use: be familiar with kenning
Those versed in the arts of riddle-mastery are capable of a special ability -- part spell, part
technique -- which combines perspicacity and divination to intuit knowledge from the astral
signature of a creature, item, or location. This ability, known as kenning, has many uses and
forms; expert application of kenning can be quite powerful in the hands of a seasoned and
knowledgeable Riddlemaster.
Anti-magick prevents kenning