Skraal used improved and powerful ghost energy to clear out most of the weak monsters.
Skraal is able to create abilities and spells using Ghost Origin with ease.
Having an origin lets one create, control, manipulate, create, and do many other things. Most of the time, using Ghost Origin as a simple tool would not work on many beings. At least it is not that effective compared to turning Ghost Origin into complex abilities by adding rules to the abilities that were created, which result in an increase in power because of conditions.
"Silent Death: Ghostly Soul Taking" was the ability he created with the use of "Ghost Origin" and formulated after powering up Ghost Origin.
Silent Death Ghostly Soul Taking
"Description"
"The user uses ghost energy like a shockwave and radiates a wave of harmful ghost energy that destroys the souls of the targets that are hit by it.""