Iron Golem

Immunity to Magic (su) - Immune to any spell or spell-like ability that allows spell resistance. In addition, certain spells and abilities function differently against the creature, as noted below.

Magic Vulnerabilities (su) - • A magical attack that deals electricity damage slows an iron golem (as the slow spell) for 3 rounds, with no saving throw. • A magical attack that deals fire damage breaks any slow effect on the golem and heals 1 point of damage for each 3 points of damage the attack would otherwise deal. If the amount of healing would cause the golem to exceed its full normal hit points, it gains any excess as temporary hit points. An iron golem gets no saving throw against fire effects. • An iron golem is affected normally by rust attacks, such as those of a rust monster or a rusting grasp spell.

Construct Traits (ex) - Constructs cannot heal damage on their own, but often can be repaired via exposure to a certain kind of effect or through the use of the Craft Construct feat. Constructs can also be healed through spells such as make whole. A construct with the fast healing special quality still benefits from that quality. A construct cannot be raised or resurrected.

• Melee (Natural) - 2 x slams +28 (2d10+16/19-20). Reach: 10 ft.

Breath Weapon (Free)(su, Poison, every 1d4 rounds) - As a free action once every 1d4 rounds, an Iron Golem can exhale a 10-foot cube of poisonous gas. This gas cloud persists for 1 round; any creature within the area when the Iron Golem creates it (as well as any creature that passes through the cloud during the remainder of that round) is exposed to the cloud's poisonous effects. This poison is magically created each time the Iron Golem uses this power. Breath weapon--inhaled; save DC: Con 19; frequency: 1/round for 4 rounds; effect: 1d4 Constitution damage; cure: 2 saves.