If the opponent can prevent Betty from calling her friends, she isn't much of a threat
Its overcosted in comparison to analogs like Village Rites and Deadly Dispute, and being a sorcery takes away a lot of interplay that cards like this usually have
[7] Expanded mode allows cards from the expanded rotation
That said, I personally like Nahiri, Forged in Fury for her ability to circumvent commander tax and potentially play a lot of free cards
However, the ST16 has 9-cost Shanks, a control late-game Character that can be added to many Green decks like Bonney, Lim, or Smoker
Rather than relying on proactive removal, she uses her green attribute pool to steadily choke out the opponent's options during their own offensive turn