Baba Yaga

Deathtouch
Hex-Whenever you cast a spell that targets an opponent or a permanent an opponent controls,
copy it unless an opponent pays {3} and 2 life.
When Baba Yag enters the battlefield each
player Mills 4, you create a 1/1 black and green
snake token with deathtouch for each land milled
this way, then you may cast an instant or sorcery
from a graveyard without paying its mana cost.