From Pathfinder Lost Omens Cheliax, Infernal Inheritance, which isn't enabled.

Piercing Jet

SPELL 2

Traditions arcane, primal

Cast

Range 30 feet

Targets 1 creature or object

You pressurize the surrounding moisture into a thin but deadly stream of water. Make a ranged spell attack roll against the target. On a hit, the target takes 4d6 piercing damage, ignoring the target's Hardness if it's the item's level × 2 or lower. On a critical hit, the target takes double damage.

Heightened (+1) The piercing damage increases by 2d6, and the amount of Hardness ignored increases by 2.

Pathfinder Lost Omens Cheliax, Infernal InheritanceORC