Trickery or deceit is used several times in Much Ado About Nothing and is a theme in the play. What are some examples of when trickery and/or deceit was used in Much Ado About Nothing?

I think that the most important trickery/deception in Much ado about nothing comes when Don John makes Claudio and Don Pedro believe that Hero is having premrital sex (Act 3.2). Instead of cancelling the wedding ceremony, Claudio awaits the ceremony so he can humiliate and slander Hero publicly.