Unified Theory Feat 15
Source Pathfinder Core Rulebook
Prerequisites legendary in Arcana
You've started to make a meaningful connection about the common underpinnings of the four traditions of magic and magical essences, allowing you to understand them all through an arcane lens. Whenever you use a skill action or a skill feat that requires a Nature, Occultism, or Religion check, depending on the magic tradition, you can use Arcana instead. If you would normally take a penalty or have a higher DC for using Arcana on other magic (such as when using Identify Magic), you no longer do so.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
GeneralA type of feat that any character can select, regardless of ancestry and class, as long as they meet the prerequisites. You can select a feat with this trait when your class grants a general feat.
SkillA general feat with the skill trait improves your skills and their actions or gives you new actions for a skill. A feat with this trait can be selected when a class grants a skill feat or general feat. Archetype feats with the skill trait can be selected in place of a skill feat if you have that archetype's dedication feat.