Flexible Studies Feat 1
Source Pathfinder Advanced Player's Guide
You've collected a cross-section of information on various disciplines you can refer to when preparing for various tasks. During your daily preparations, you can cram on a certain subject to become temporarily trained in one skill of your choice. This proficiency lasts until you prepare again. As this proficiency increase is temporary, you can't use it as a prerequisite for a skill increase or permanent character option like a feat.
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.
InvestigatorThis indicates abilities from the investigator class.