Tiberolith

A bizarre thrum echoes from somewhere deep within this towering stone hulk, the ground roiling beneath the monolithic creature’s stony feet as blue liquid runs down its shuddering body.

Tiberoliths are constructs with the following construct traits. Low-light vision, Darkvision 60’,
Immunity to all mind-affecting effects, bleed, disease, death effects, necromancy effects, paralysis, poison, sleep effects, and stunning. They cannot heal damage on its own, but often can be repaired via exposure to a certain kind of effect. Not subject to ability damage, ability drain, fatigue, exhaustion, energy drain, or nonlethal damage. Immunity to any effect that requires a Fortitude save (unless the effect also works on objects, or is harmless).
Not at risk of death from massive damage. Immediately destroyed when reduced to 0 hit points or less. A construct cannot be raised or resurrected.Constructs do not breathe, eat, or sleep.

Tiberoliths are immune to acid, and are very difficult to damage without blunt adamantine weapons. They can unleash a blast of electricity, and when severelydamaged, a blue acid seeps from the damaged areas, potentially causing additional acid damage.

Tiberolith

Serpent Skull TatteredKing