When the character casts sepia snake sigil, a small symbol
appears in the text of one written work such as a book, scroll,
or map. When this symbol is read, the sepia snake springs into
being and strikes at the nearest living creature (but does not
attack the character). The target is entitled to a save to evade
the snakes strike. If it succeeds, the sepia snake
dissipates in a flash of brown light accompanied by a puff of
dun-colored smoke and a loud noise. If the target fails its save,
it is engulfed in a shimmering amber field of force and
immobilized until released, either at the character's command or
when 1d4 days +1 day per caster level have elapsed.
While trapped in the amber field of force, the subject does
not age, breathe, grow hungry, sleep, or regain spells. He is
preserved in a state of suspended animation, unaware of his
surroundings. He can be damaged by outside forces (and perhaps
even killed), since the field provides him with no protection
against physical injury. However, if he is reduced to 1 to
9 hit points, he does not lose hit points or stabilize
until the spell ends.
The hidden sigil cannot be detected by normal observation, and
detect magic reveals only that the entire text is magical. A
dispel magic can remove the sigil. An erase spell destroys the
entire page of text. Sepia snake sigil can be cast in combination
with other spells that hide or garble text, such as secret page.