Baba Beltruda, Hagmother

Hags can't attack you or planeswalkers you control,
and Hags can't block creatures you control.
At the beginning of each opponent's upkeep,
bargain with that opponent.
{u}{b}{g}: Exile target nontoken creature an
opponent controls. Its controller creates an X/X
black Hag creature token, where X is the exiled
cards converted mana cost.