Darth Sidious, the Emperor

Vigilance
{1}{b}{r}: Destroy target creature.
When this creature dies, attacking player loses X
life, where X is the power of this creature.
———{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}
Did you ever hear the tragedy of Darth Plagueis, the
Wise?