There is a Legacy version
here.
Magic Sense Feat 14*Arcane Detection Magus Oracle Sorcerer Wizard Source Player Core pg. 204 2.0Archetype Lich* This version of the Magic Sense feat is intended for use with an Archetype and has a different level for access than the
original feat.
You have a literal sixth sense for ambient magic in your vicinity. You can sense the presence of magic auras as though you were always using a 1st-rank detect magic spell. This detects magic in your field of vision only. When you Seek, you gain the benefits of a 3rd-rank detect magic spell on things you see (in addition to the normal benefits of Seeking). You can turn this sense off and on with a free action at the start or the end of your turn.
Archetype Use
This feat can be used for one or more Archetypes in addition to the listed Classes. When selected this way, the feat is not considered to have its class traits.
Traits
Arcane: This magic comes from the arcane tradition, which is built on logic and rationality. Anything with this trait is magical.
Detection: Effects with this trait attempt to determine the presence or location of a person, object, or aura.