Streghe — 1x10

In this episode, the warlock uses astral projection to frame Prue for theft, trying to trick the sisters into giving up their powers to save her from jail. It is a pivotal moment where the sisters' bond is truly tested. Memorable Quote from the episode:

"Sei una strega miserabile." Prue: "Qual è il problema?" Piper: "Non lo so. Ho voglia di chiamare uno strizzacervelli per qualche motivo." Why this episode matters: Streghe 1x10

We get more hints about Leo’s true nature as he "heals" the Book of Shadows in the aftermath. In this episode, the warlock uses astral projection