I'm starting to think Iago won't be killing anyone.

Othello, the Moor of Venice
William Shakespeare

Not only is Iago a master of manipulation, but he has also artfully put his plans into motion without blood getting on his hands. In order to get revenge on Othello, he could have killed Othello, his wife Desdemona, his friend Cassio, or destroyed his reputation, or any combination. However, Iago went with destroying Othello's mind. On its own, this sounds like a mild revenge, but Othello's insanity will lead to more emotional and physical torment. Iago wants Othello to kill Desdemona because he wants Othello to never be able to love again. Furthermore, Iago prompts Othello to "strangle her in her bed, even the bed she hath contaminated" (Shakespeare 1432). Iago is so trusted by Othello, that Othello is willing to, in blunt force, murder his wife and most likely have to take the blame for the murder. Iago also tells Othello that he shall deal with Cassio while Othello kills Desdemona. But Iago rinses his hands yet again by convincing Roderigo to kill Cassio. He assures Roderigo that he will be there to back him up, but it is Roderigo's job to crush the only thing that stands between him and Desdemona. At least, that's the information that Iago has been feeding him.