Actions

Multiattack. The golem makes a number of attacks equal to half this spell's level (rounded down). Only one can be a Poisonous Gas attack, if available.   Slam. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d8 + 4 + the spell's level bludgeoning damage.   Poisonous Gas (Iron Only). All other creatures within 5 feet must make a Constitution saving throw against your spell save DC. On a failure, a creature takes 1d12 + the spell's level poison damage and is poisoned until the end of its next turn.