Death
Many things have changed, Zelhart has finally reached the same power of a God, with as much magical power as Hulum Ying. His entire body had to adapt and support all the transformation, creating new escape valves for all the mana.
The Body Runes grew and entirely connected with each other, his skin became tough and grey. His vision also changed, seeing beyond people's flesh and bones, reaching their nature and the elementary particles of each one.
Every elementary particle chemical reaction was finally obvious and clear, seeing everything no matter how small it was. All the gaps in his knowledge now were being filled with his new vision, understanding how the world really works.
However, even though he saw his children dead and also understood Nature has only made clones from them. He saw that as mercy, with Nature doing what was needed to keep him focused on his objective of destroying the world.