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From Pathfinder Adventure: Troubles in Otari, which isn't enabled.

Viper Urn

HAZARD 1
Stealth +5
Description A ceramic urn containing a coiled viper tips and shatters when a tripwire is pulled.

Disable DC 15 Thievery (trained) to stabilize the urn, or DC 15 Athletics to carefully lower the heavy urn

AC 15; Fort +8, Ref +5
Hardness 6, HP 4 (BT 2); Immunities critical hits, precision

Topple

When someone pulls the trip wire, the urn smashes against a creature in the doorway, making a shattering urn Strike against that creature, then releases a Viper into the square that contained the trap. The viper attacks any non-plant creature it detects.

Melee Shattering Urn +12 (deadly d10), Damage 2d6+5 slashing
Pathfinder Adventure: Troubles in OtariOGL