Pathfinder 2e Action / Feat: Fundamental Understanding

Requirements analyst paradox
Trigger A creature, trap, or similar object within your quantum field casts a spell that you don’t have in your spell repertoire, and you’re aware of the casting.

Action

Reaction

Description If the triggering spell is common and you’re trained in the associated skill for the spell’s tradition, you automatically identify the spell being cast (you still roll to attempt to get a critical success but can’t get a worse result than a success). You or a visible ally within 60 feet targeted by this spell gain a +1 circumstance bonus to your saving throw or your AC against it (or a +2 circumstance bonus if you rolled a critical success).