Although Angron had only one head that could move, the wisdom of the Primarchs was their greatest asset. When Angron wore the Butcher's Nails, he had been nothing more than a war machine that constantly roared. Once he was able to think calmly, Leman Russ immediately discovered that his brother's talent for administration could even rival that of the suspiciously minded Roboute Guilliman.
This made Leman Russ hate the Butcher's Nails all the more. That thing had destroyed his brother's sanity. Just as he was preparing to destroy both the Butcher's Nails and their replicas forever, Angron stopped him.
He wanted to keep those instruments of torture as a reminder of just how foolish and cowardly he had once been.
Naturally, Leman Russ immediately informed The Emperor that Angron had returned to normal. When The Emperor received his letter, Magnus was standing at his side.
For the first time, the scarlet-skinned Primarch saw his silent father freeze. After a long while, he slowly let out a breath, and his tightly furrowed brow relaxed considerably.
Seeing that The Emperor was in a good mood, Magnus proposed entering the portal to visit his brother. The result, naturally, was that The Emperor pressed him over his knee and gave him a vicious beating.
"You still cannot go in. Your soul still carries a bomb capable of threatening that world's safety!"
Angron reorganized the occupied territories that Leman Russ had no time to manage and turned them into territories governed by the Imperium. He used his intellect to resolve all manner of administrative problems, while also having Khayon and the other World Eaters captains learn from him properly.
Angron earnestly told his children, "Ruling is a field of study even more worthy of our research than conquest. Do not underestimate it."
Khârn and the