Carnage of the Destroyer

At the beginning of you upkeep, put a random
card from your graveyard to the bottom of your library for each root permanent you control.
Whenever a non-root or non-horror creature
attacks, it get -2/-0 until the end of turn.
"Though it may seem beautiful, the carnage of the root
is not only made from the flesh of their victims. It
weakens the life around it."