Dread Titanomachy

Whenever a creature with mana value five or
greater enters the battlefield under your control, destroy target creature an opponent controls.
{4}{b}{b}: Return target creature card from your graveyard to the battlefield. At the beginning of
the next end step, you lose life equal to the total
toughness of creatures that died this turn. (This ability notes a creature's toughness when it entered a graveyard, not its toughness as it left the battlefield.)