Is there a magic item special ability which gives a bonus to confirm critical hits?

[Wu Li]

Does anyone know of a weapon special ability which gives a bonus to attack rolls to confirm critical hits? I'm an inquisitor so I don't get access to the Critical Focus feat until 12th level, and I'd rather not spend a precious feat to gain this ability. I've taken the Craft Magic Arms & Armour feat and I'd like to try adding the ability to my weapon, maybe using the Unerring Weapon spell?

[Broken Prince]

The 1st level Paladin spell Bless Weapon allows you to automatically confirm critical hits vs evil creatures. There used to be a Scabbard that could use it in 3.5, but I can't seem to find a PF version.

[uriel222]

Well, there's cunning

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Cunning: This special ability allows a weapon to find chinks in a foe's defenses using the wielder's knowledge of the target. Whenever the weapon's attack is a critical threat, the wielder gains a +2 bonus on the confirmation roll if she has 5 or more ranks in the Knowledge skill related to the target's creature type (such as Knowledge [planes] for an outsider opponent).

Moderate divination; CL 6th; Craft Magic Arms and Armor, true strike; Price +1 bonus.

fervent

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Price +1 bonus; Aura moderate conjuration; CL 8th; Weight —

DESCRIPTION

A fervent weapon thrums with the divine power of a specific deity or set of deities.

If the wielder is an adherent of the deity or deities, she gains several benefits. First, the wielder gains a +4 insight bonus on Bluff, Disguise, and Sleight of Hand checks to conceal the weapon from members of other religions. On a successful hit against a flat-footed target of a different religion, the target must succeed at DC 13 Will save or be shaken for 1 minute. Finally, the wielder receives a +2 bonus to confirm critical hits against members of other religions.

The creator of a fervent weapon must be within one step of the religion to be attuned to the weapon, along either the lawful/chaotic axis or the good/evil axis. The target religion must be determined at the weapon's creation and cannot be altered.

CONSTRUCTION REQUIREMENTS

Craft Magic Arms and Armor, align weapon; Cost +1 bonus

and patriotic

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Price +1 bonus; Aura moderate conjuration; CL 10th; Weight —

DESCRIPTION

A patriotic weapon radiates with the collective power and strength of a particular nation of people.

If the wielder is a member of that nationality, he gains several benefits. First, the wielder gains a +4 insight bonus on Bluff, Disguise, and Sleight of Hand checks to conceal the weapon from members of other nationalities. On a successful hit against a flat-footed target of a different nationality, the target must succeed at DC 13 Will save or be shaken for 1 minute. Finally, the wielder receives a +2 bonus to confirm critical hits against members of other nationalities.

The nationality affected must be determined at the patriotic weapon’s creation and cannot be altered. At the GM’s discretion, the nationality named may be a specified human ethnicity.

CONSTRUCTION REQUIREMENTS

Craft Magic Arms and Armor, summon monster I; Cost +1 bonus