Beshaba, Maid of Misfortune

As long as your devotion to black and green is
less than seven, Beshaba isn't a creature.
Whenever an opponent would roll one or more
dice, they roll an additional die. You may select
which results they use. Whenever an opponent
rolls a natural 1, they lose 10 life.
"Bashaba was lovely to behold, but her heart was malicious and spiteful."