True Seeing
Spell 6DivinationRevelationSource Core Rulebook pg. 378 2.0Traditions arcane,
divine,
occult,
primalBloodlines diabolic,
genieCast 
somatic,
verbalDuration 10 minutes
You see things within 60 feet as they actually are. The GM rolls a secret counteract check against any illusion or transmutation in the area, but only for the purpose of determining whether you see through it (for instance, if the check succeeds against a polymorph spell, you can see the creature's true form, but you don't end the polymorph spell).