The golem halves all elemental damage it takes (fire, cold, electricity, acid).

The golem is immune to electricity and regenerates 1 hit point for every 3 points of electricity damage it takes.

The creature is barely affected by weapon damage: metal bounces off it like a mere piece of wood, or the creature heals immediately. It gains damage reduction (DR) 5, subtracted from all damage it takes.

The creature moves up to 30 meters and makes an attack, rolling two d20s and keeping the better result. If the attack succeeds, in addition to normal damage, a victim of equal or smaller size than the creature must make an opposed Strength check or be Knocked Prone. In that case, the creature tramples (or gores) its victim and the damage is doubled.

When it takes a critical hit or its hit points drop below half, the creature becomes enraged. It ignores pain and fear penalties, gains a +5 bonus to its melee attack score, and +1d6 to its damage. It can still act for one full round after reaching 0 hit points.