From Pathfinder Dark Archive (Remastered), which isn't enabled.

Magical Knowledge

FEAT 8

Prerequisites Thaumaturge Dedication; trained in at least one of Arcana, Nature, Occultism, or Religion and expert in at least one other

Increase your proficiency rank in one of Arcana, Nature, Occultism, or Religion from expert to master and in another from trained to expert. You gain a skill feat associated with each of the skills you chose.

Pathfinder Dark Archive (Remastered)ORC