The golem is immune to any spell or effect that would alter its form.

The golem doesn't require air, food, drink, or sleep.

The golem regains hit points at the start of its turn depending on it's level. 1 at level 1, 2 at level 2, and so on. If the golem takes bludgeoning or thunder damage, this trait doesn't function at the start of the golem's next turn. The golem is destroyed only if it starts its turn with 0 hit points.

Magical, colored light springs from the golem in a 15-foot cone. Each creature in the cone must succeed on a DC 10 Constitution saving throw or be blinded for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

If damage type is bulldogging then glass golem takes an extra 1d6 bulldogging damage.