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From Pathfinder Lost Omens Monsters of Myth, which isn't enabled.

Quaking Slither

HAZARD 14
Stealth +0
Description Ebeshra slithers across the ground, causing the earth to tremble as though from a powerful earthquake.

Disable three DC 38 Athletics (trained), DC 38 Crafting (trained), or Engineering Lore (trained) checks to brace a small structure or surface to cancel the effects of the quake in that area, or a single DC 41 Diplomacy (master) check to entreat Ebeshra to stand down

AC 10

Quake
Trigger Ebeshra moves at least 60 feet on land

Effect The ground shakes in a 120-foot emanation from Ebeshra's space. This creates a variety of effects depending on the surrounding environment.

In an area without significant underground space, the ground becomes greater difficult terrain, and creatures on it are Off-Guard and Clumsy 2 for 1 round.

In areas with existing underground spaces (like sewers, sinkholes, or catacombs), fissures open up in the ground. Creatures in the area tumble into the resulting 80-foot-deep hole unless they succeed at a DC 40 Reflex save.

In bays, on beaches, and in other relatively substantial but shallow bodies of water, the tremors create dangerous waves. Creatures in the water or within 60 feet of the waterline are struck by waves that deal 10d8 bludgeoning damage (DC 35 basic Reflex save). On a critical failure, a creature is instantly swept 60 feet out to sea and 60 feet under the water's surface.

Reset Ebeshra doesn't rush this way again for 1d4 rounds.
Pathfinder Lost Omens Monsters of MythOGL