a revenge artist is a person often female who is a third party in an altercation between one or more outside entities (most often, female revenge artist acts out a revenge situation on spurned female's exboyfriend) and willingly commits an act of revenge (prank, not high crime.) in order to satisfy the feelings of someone in pain without getting the client in any trouble.
Woman: my boyfriend is wicked scuzzy; he dumped me via Facebook message two days after he got another girlfriend.
Revenge Artist: I can hook you up, homefry.
Woman: really? let's show that ass :)
Revenge Artist: ____ will happen on _____ while you are at ______ with a friend so you will have an alibi. Then I will make ______ pay.
Woman: OH THANK YOU, MYSTERY BITCH