Those crimson flames were little by little, destroying the defensive layer of Mana protecting that golem and the main motive behind that, was the unending supply of energy Seth currently had. He kept increasing the strength behind his fire technique, until at a certain point, it broke through the red crystal golem's defenses and fiercely assaulted the beast.
Roar!
The creature made of tough crystals, should have been completely resistant against most types of fire, but those red flames, burned it as if it was burning a body made of flesh. The fire clung to the surface of that creature's body, quickly turning some crystals into ashes and making it lose its notions.