Illusion Sense Feat 1
Source Pathfinder Core Rulebook
Your ancestors spent their days cloaked and cradled in illusions, and as a result, sensing illusion magic is second nature to you. You gain a +1 circumstance bonus to both Perception checks and Will saves against illusions. When you come within 10 feet of an illusion that can be disbelieved, the GM rolls a secret check for you to disbelieve it, even if you didn't spend an action to Interact with the illusion.
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.