There is a Legacy version
here.
Elf Atavism Feat 1Aiuvarin Source Player Core pg. 82 2.0
Your elven blood runs particularly strong, granting you features far more elven than those of a typical aiuvarin. You may also have been raised among elves, steeped in your elven ancestors’ heritage. You gain the benefits of the elf heritage of your elven parent or ancestors. You typically can’t select a heritage that depends on or improves an elven feature you don’t have. For example, you couldn’t take the
Ancient Elf heritage unless your non-elf ancestry also has a lifespan measured in multiple centuries. In these cases, at the GM’s discretion, you might gain a different benefit.
Special You can take this feat only at 1st level, and you can’t retrain out of this feat or into this feat.
Traits
Aiuvarin: A creature with this trait has the aiuvarin versatile heritage. Aiuvarins are of mixed ancestry, including elves or other aiuvarins. An ability with this trait can be used or selected only by aiuvarins.