Theoretical Acumen Feat 1
Source Pathfinder Lost Omens: Character Guide
Frequency once per day
Trigger You succeed at a skill check to Recall Knowledge to identify a creature.
You study a creature's form and behavior to hypothesize likely means of overcoming its strengths. Once before the end of your next turn, you can use the skill modifier from the triggering check in place of your saving throw modifier against one of the creature's abilities, in place of your Perception modifier to Seek the creature, in place of your Deception modifier to Feint against the creature, or in place of your Intimidation modifier to Demoralize the creature. Alternatively, against one of the creature's attacks, you can use your DC for the skill used in the triggering check in place of your AC.
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.
GnomeA creature with this trait is a member of the gnome ancestry. Gnomes are small people skilled at magic who seek out new experiences and usually have low-light vision. An ability with this trait can be used or selected only by gnomes. A weapon with this trait is created and used by gnomes.