Once every 1d4+1 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 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 golem uses this power. Inhaled; save Death; frequency 1/round for 4 rounds; effect -2 Constitution damage; cure 2 saves. Ability damage suffered from this effect is restored only via magic healing.