The Darkness

Enchant land
When The Darkness enters the battlefield, each
player loses 3 life.
Enchanted land is a swamp in addition to its
other types, and it has "{t}: Destroy target
creature and add {b}{b}{b}{b}."
"The Darkness is the hole in which the Demon-Hydra
was birthed anew, and at which the world shuddered."