After realizing that he was making no progress with his attempts to pierce through to the core, he decided to switch tactics. Instead of trying to break in, he would just break it entirely. So he wrapped his energy around the core, before constricting it from all directions at once.
Initially, there was a strong resistance, but soon after he could feel cracks appearing on the core. Strangely, the golem went silent at this, a mortified expression on its face.
As he increased the intensity with which he constricted even more tiny cracks began to appear, until eventually they became gaping fissures, releasing clouds of raw energy from within it.
As this energy seeped out, he could sense its density, it was a different sort of energy from anything he had ever experienced before, and it seemed to be affecting his crux as well.