10 Reasons Supernatural's Rowena Is the Baddest Witch in Town

There's no denying that Rowena's a leader. After decoding the Book of the Damned, she learns some new tricks of her own and attempts to create the Mega Coven, a rejuiced version of the obsolete Grand Coven. When the witch recruits insult Rowena and tell her that her son is still alive, she casts a spell that incinerates them. Eh, we didn't say that she was perfect.