The God of Blacksmiths already knew that Primus was made out of a mixture of metals, and one of the metals was a metal every blacksmith desired to work on.
Compliant Gold
It was a metal of Legends. A metal that was rarely found in the universe, and a metal that many divine blacksmiths claimed to originate from outside the universe.
Compliant Gold was one of the many metals he had desired to find and had also done an extensive research on, so he knew about its ability to increase its length and weight.
However, what he also knew was that to drastically increase the weight and length of Compliant Gold required a vast quantity and high purity of energy.
The energy requirements was so high that very few Immortals could properly utilize Compliant Gold to the best of its abilities. Only gods could use without having to worry so much about the energy requirements.
This was one of the reasons why he was so shocked when he felt the drastic increase in Primus' weight.
