Source: Bestiary 6, pg(s). 142
Quintessence golems are golems made from quintessence, the raw material that makes up the Outer Planes, one with infinite potential for shape and state. A quintessence golem is animated by the flow of souls through it into the Outer Planes and by quintessence's inherent potential for life, rather than an imprisoned elemental spirit. Quintessence encourages souls to head to the afterlife and seek Pharasma's judgement, making these golems particularly dangerous and well suited as guards of temples or graveyards.