Ban players when they die.
NationsDeathBan is a Minecraft server plugin I made for my event Nations.
What it does is ban players when they die, it also hides the killer and strikes lightning at the death location.
When a player dies:
/pardon <player>.nations.deathban.bypass - Anyone with this permission will not get banned on death.nations.deathban.viewkiller - Anyone with this permission will be able to see the name of killers on player kills.lightning-on-death: true - When this is set to true lightning will strike on death.death-message: "Your fight is over." - Set the message that should be used when a player gets banned after they die.