Heart Keeper, Brutalia

Haste
{r}{r}{b}{b}, {t}: Choose one demon from your graveyard. Return target demon to the battlefield. Target creature gains +1/+1 for every use of the word "demon" in cards among your graveyard.
If Heart Keeper, Brutalia were to be sent to the graveyard by any means, you may exile creatures from your graveyard whose converted mana cost are equal Heart Keeper, Brutalia's mana cost.