The character discerns spells and magical properties present
in a creature or object. One property, spell, or power is
revealed each round, from lowest level (or weakest power) to
highest (or strongest). For each spell or power, the character
makes a caster level check (1d20 + caster level). If the result
is equal to or higher than the spell's or power's caster level,
the character identifies it. Otherwise, the character fails to
identify that spell or power, and the character can check for the
next one next round.
Analyze dweomer does not function when used on an artifact.
After the character analyzes one object or creature, the spell
ends, even if its duration has not expired yet. Casting this
spell is physically taxing; The character must make a Fortitude
save (DC 21) when the spell ends or be exhausted and unable to do
anything but rest for the next 1d8 hours.