A combination of the words Scheming and Conniving.
Schenniving is to collude, or cooperate in an illigal or wrongful action, while simultaneously contriving a secret plan or plot.
"The Blues never sleep. They're to busy plotting to destroy our way of Life. That's how you can always spot a Blue Donut. They're always the ones Conniving and Scheming. Sometimes they do both. I call that, Schenniving." Sarge(Staff sergeant and leader of the Blood Gulch Red Team)