Earned Glory Feat 1
Source Pathfinder Advanced Player's Guide
Elves are often skeptical of their half-elven kin, and you are experienced at telling stories of your accomplishments to gain their respect. You are trained in Performance. If you would automatically become trained in Performance (from your background or class, for example), you instead become trained in a skill of your choice.
You gain the Impressive Performance feat. When you attempt a Performance check to Make an Impression on an elf, if you roll a critical failure, you get a failure instead.
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.
HalfElfA creature with this trait is part human and part elf. An ability with this trait can be used or selected only by half-elves.