Inattention Blindness (Su)
Replaces: Trapfinding
At 1st level, a cipher can blind nearby creatures to his presence. A creature who would become aware of a cipher’s presence when the cipher is within 10 feet per cipher level must succeed at a Perception check against a DC equal to 10 + the cipher’s investigator level + his Intelligence modifier or the creature ignores the investigator as though it had not become aware of his presence. The cipher can spend a use of inspiration to raise the DC by 1d6. The affected creature continues to ignore the cipher until he attacks, moves out of range, directly interacts with the creature, interacts with another creature or object in a way the affected creature notices, or otherwise specifically draws attention to himself. If the cipher does none of these things, the affected creature can attempt another Perception check at the same DC for each minute the cipher remains in range.
A creature that was aware of the cipher’s presence prior to being in range of his inattention blinding ability is unaffected. This is a mind-affecting compulsion effect.
A cipher can affect only one creature with inattention blindness at any given time, plus one additional creature at 5th level and every 3 investigator levels thereafter, to a maximum of seven creatures at 19th level. Once a cipher reaches that maximum, he can’t affect an additional creature until he ends the effect for an already affected creature. If multiple creatures enter the range of inattention blindness simultaneously, they all must attempt Perception checks; the inattention blindness effect affects the creatures with the lowest Perception check results, in order, until it reaches the maximum number of creatures it can affect.
The cipher can suppress or activate inattention blindness as a free action, and dismiss its effects on any affected creature within range as a move action.
This ability replaces trapfinding, poison lore, poison resistance, poison immunity, and trap sense.
Null Aura (Su, Sp): At 4th level, a cipher becomes much harder to notice with divinations. He gains a +4 bonus on saving throws against divination spells, spell-like abilities, and effects.
Attempts to locate the cipher with scrying and other spells that share the knowledge and connection rules with scrying function only if the caster has firsthand or familiar knowledge of the cipher, or has one of his body parts (not from secondhand knowledge, possession, or a likeness of the cipher).
If the caster does not meet these conditions, or if the cipher succeeds at a saving throw to negate such an effect, the spell or effect reveals nothing but darkness as if the target was invalid or did not exist; unlike normal, even if she is using a spell with a single target, the caster of the divination effect does not discover that her target succeeded at a saving throw.
At 9th level, a cipher benefits from constant nondetection, requiring those who wish to use divinations on him to succeed at a caster level check (DC = 15 + his investigator level).
This ability replaces swift alchemy and the investigator talent gained at 9th level.