Mindless. This creature has no Intelligence score (Treat it as having a +0 for saving throws required of it) and so is immune to Psychic damage and Mind-Affecting effects. It automatically fails any Intelligence check it needs to make.   Construct Traits. This creature is immune to Mind-Affecting effects, Sleep effects, Disease, Death effects, any Necromancy effect, any effect that requires a Constitution saving throw, Critical Hits (Unless the attack is from an adamantine weapon), Nonlethal Damage, any effect that would reduce its ability scores, and death from massive damage. As a construct, it cannot heal damage on their own, but can typically be repaired by exposing them to a certain kind of effect or through the use of certain magics. A construct with any form of Regeneration still benefits from that quality.   Immutable Form. The terra cotta warrior is immune to any spell or effect that would alter its form.