Amber the Blood Lich

Necrotize — {b/r}{b/r}, {t}: Put a -1/-1 counter on
target creature an opponent controls.
Fixed Point in Time — {b}{b}{b}{b}, sacrifice this creature: Create The Exalted One, a legendary
10/10 black Demon creature token with shroud, indestructible, "When The Exalted One
enters the battlefield, your life total becomes 1",
"When The Exalted One becomes blocked,
destroy all creatures", and "You can't lose the
game."