When Prudence Slices the Head Off of Father Blackwood's Judas Statue
After being shamed by the Dark Lord and outwitted by pretty much all of the witches in his coven, Father Blackwood decides to take the twins, Judas and Judith (formerly Leticia), and go on the run. Near the end of the season two finale, we see Prudence and Ambrose — who are sure to be my new favorite crime-fighting duo — armed and ready to hunt down Daddy Blackwood and save her baby sister from having to grow up with him (and one day marry her own twin brother, yikes).
Before making their way out of the empty Academy, Prudence pulls out her swords and slices the head off of the Judas statue, samurai-style. It represents not only the end of Father Blackwood's tyranny over the coven but the beginning of her own freedom. If that wasn't badass enough, Prudence then lets out a sigh of relief and casually tells Ambrose, "Come along!"