Soulsight (Sorcerer) Feat 8
Source Pathfinder Advanced Player's Guide
Prerequisites bloodline that grants divine or occult spells
The spiritual essence in your blood has opened your senses to the world beyond. You gain spiritsense as an imprecise sense with a range of 60 feet.
Spiritsense enables you to sense the spirits of creatures, including living creatures, most non-mindless undead, and haunts within the listed range. As with your hearing and other imprecise senses, you still need to Seek to locate an undetected creature.
As spiritsense detects spiritual essence, not physical bodies, it can detect spirits projected by spells such as Project Image or possessing otherwise soulless objects. It can't detect soulless bodies, constructs, or objects, and like most senses, it doesn't penetrate through solid objects.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
SorcererThis indicates abilities from the sorcerer class.