Valley of Death

Valley of Death enters the battlefield tapped.
{t}: Add {b}.
{r}, {t}, Sacrifice Valley of Death: Valley
of Death deals 3 damage to target player.
Activate this ability only if there are three
or more creature cards in your graveyard.
"Not far from Khemi there is the Valley
of Death, and in it - three temples..."
—Douglas Brian, "The Lions of Stygia"