Rakhathbound

Deathtouch, menace
Whenever a creature enters the battlefield under
an opponent's control, that player loses life equal to its power. You gain life equal to the life lost this way.
Thunder boomed in the heavens above, and Clara looked to the parted skies in fear. "The Sower of Hatred,", she began, "Rakhathbound. His arrival marks the day of this world's end."