Kahn as Legolas sat quietly inside his office while reminiscing the events of the death of the vice president of the 2nd strongest guild of Alfheim.
After learning through their hidden assassins of Legion, Ronin reported that both the top 2 main guys of the guild were behind the ploy.
Thus Kahn and the group decided to send a loud and clear message from the very beginning.
It didn't matter if the President tried to throw a tantrum later. As long as one wasn't a 5th stage saint, their crew was capable enough to easily get rid of anyone who came in their way.
As for the death of Ranobes, the old human 3rd stage summoner saint…
The members of the legion acted as a beacon of his location and Kahn traveled using True Dimension to his location.
However, he didn't use Dimensional Cut to kill the saint.
Dimensional Void didn't leave a trace behind because all it did was connect both world of the living and true dimension as a gateway.