Yuusha Party wo Tsuihou sareta node, Maou wo Torikaeshi ga Tsukanai hodo Tsuyoku Sodatetemita - Vol. 1 Ch. 3.2

[MangaDex]

 

[welcome2atlantis]

I didn't even see when he cut off their heads and reattached them.
This guy is mad dangerous.

 

[Coldlight]

Tactic: Make them listen by virtue of sheer overwhelming force
It was just a demonstration that he could kill them any time he wanted. Certainly one way to get people to listen. Raizel isn't beating the psychopath allegations any time soon though, that's for sure.

 

[Seraphsent]

This has been the smartest decision made by anyone in the story so far, protag included.