scheme artist 

A person, (who usually has an accomplice), that thinks of devious and scandalous plans time and time again sometimes with the intent to hurt.

Jay-Z cheated on Beyonce with Rhianna. So Beyonce and Kelly Rowland schemed up a plan to catch Jay in the act. Kelly and Beyonce repeatedly do this to Jay with any other female he speaks to which makes them scheme artists.

scheme artist by Kaitlin the G and Kara Lael January 14, 2008