Although it explained everywhere, but still I am unable to understand the abilities of victim. In anime or manga, I can't see the Victim's work. He just come and go but what are his power is still under the question.
Victim's powers are its powerful sealing-type skills that it activates upon death and it also protects/supports allies as well. So it is an enemy you desperately don't want to kill.
When he dies a powerful sealing spell occurs, thats how they dealt with a big invasion in yggdrasil. There is not much information on what the the spell actually does though.
I think Victim is a kind of sacrificial combo that Ainz Ooal Gown (The Guild) discovered.
You see, if you get a boon when you sacrifice a sentient being, what do you get if the sacrifice a being that is a baby (fetus, ok), it's an angel/archangel, and is a patriot, a saint and a martyr?
Probably you get an effect that could temporarily paralyse a large group of players/NPCs. While they can't run, defend or attack, the other beings of the 8th floor crush the invaders.
What do you think?