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There is a Legacy version here.

Arcana (Int)

Source Player Core pg. 234
Arcana measures how much you know about arcane magic and creatures.

Arcana Trained Actions

Item Bonuses for Arcana - Common Items

Item Bonuses for Common items

ArcanaMage's Hat+13Other Worn ItemsNo
ArcanaCognitive Mutagen (Lesser)+11Alchemical ElixirsYes
ArcanaMage's Hat (Greater)+29Other Worn ItemsNo
ArcanaAccolade Robe+210Other Worn ItemsNo
ArcanaMaster Magus Ring+211Other Worn ItemsNo
ArcanaEidolon Cape+211Other Worn ItemsNosummoner with arcane eidolon only
ArcanaCognitive Mutagen (Moderate)+23Alchemical ElixirsYes
ArcanaAccolade Robe (Greater)+317Other Worn ItemsNo
ArcanaPossibility Tome+318Held ItemsNochecks to Recall Knowledge
ArcanaCognitive Mutagen (Greater)+311Alchemical ElixirsYes
ArcanaCognitive Mutagen (Major)+417Alchemical ElixirsYes

Item Bonuses for Uncommon/Rare/Unique items

ArcanaRing of Wizardry (Type I)+17Other Worn ItemsNo
ArcanaRing of Wizardry (Type II)+210Other Worn ItemsNo
ArcanaRing of Wizardry (Type III)+212Other Worn ItemsNo
ArcanaRing of Wizardry (Type IV)+214Other Worn ItemsNo
ArcanaAeon Stone (Amplifying)+216Other Worn ItemsNoBonus corresponds to the tradition of the last spell you enhanced with this aeon stone.
ArcanaThe Silent Hag+220The Deck of DestinyNoArcana checks to Recall Knowledge (+3 at 17th level)

Related Feats

To see a list of Feats related to Arcana, click here.

Arcana Trained Actions

Borrow an Arcane Spell

Concentrate Exploration 
Source Player Core pg. 234
If you're an arcane spellcaster who prepares spells, you can attempt to prepare a spell from someone else's arcane spellbook, arcane witch familiar, or the like. The GM sets the DC for the check based on the spell's rank and rarity; it's typically a bit easier than Learning the Spell.

Success You prepare the borrowed spell as part of your normal spell preparation.
Failure You fail to prepare the spell, but the spell slot remains available for you to prepare a different spell. You can't try to borrow this spell again until the next time you prepare spells.