Death Together

The dark energy in Loramus was the energy that he absorbed from the Stormwind Altar when he revived. This energy wasn't the same as the other Demon Hunters, who took their energy from Demons. It was absorbed straight from the Twisting Nether, which was why Razelikh felt that the energy was pure and familiar.

For Razelikh, the energy in Loramus was like seeing his mother.

However, this familiarity didn't make Razelikh surrender – it only made him go berserk.

Razelikh was at a disadvantage, and it was almost impossible for him to kill his opponent with his own power. However, he refused to be banished into the Twisting Nether either. Then, he discovered that Loramus was filled with demon power, and decided to use this chance to synchronize himself into Loramus.

Razelikh invaded the body of Loramus in an attempt to control his mind and make the power of Loramus his own. Then, he would become an even stronger demon.