Syntax: 'vow list' 'vow martyrs' 'vow choices' 'vow revenge on <x>'
The vow command allows you to vow revenge on an enemy or their guild on behalf of someone they martyrd that you are allied with. When an ally or a guild mate are killed in PK, they are considered a martyr for a short duration after their death. As an ally or a guildmate you may vow revenge against either the specific killer (for a large range increase against them or against the killer's entire guild (for a small range increase against all active pkers in that guild.
'vow list' will show the active vows of revenge. 'vow martyrs' will show the active martyrs, and who killed them. 'vow choices' will print all of the targets you could potentially vow revenge against.