pf2e.fyi
From Pathfinder #149: Against the Scarlet Triad, which isn't enabled.

Seismic Spears Trap

HAZARD 19
MAGICALTRAP
Stealth +33 (master)
Description Lines of searing lava lance through the area, causing targets to shake as if caught in an earthquake and potentially become petrified.
Disable DC 43 Thievery (master) to disable the wards or Dispel Magic (9th rank; counteract DC 38) to counteract the ward.
Cataclysmic Rain (arcane, earth, fire)
Trigger A creature enters the marked area
Effect Fiery spears make one Strike against each living creature within 5 feet of the marked area.
Personal Quake

A creature struck by a seismic spear is Clumsy 3 for 1 round as their body shakes uncontrollably. On a critical hit, a target must succeed at a DC 39 Fortitude save or be Petrified for 1 minute, or permanently on a critical failure.

Melee Seismic Spear +40, Damage 3d10+10 fire plus 3d10+10 piercing plus Personal Quake

No multiple attack penalty

Reset The trap resets after 1 minute.
Pathfinder #149: Against the Scarlet TriadOGL