Contest the Malevolent

Whenever a creature an opponent controls attacks or blocks, you may pay {w} to prevent all combat damage dealt by that creature this turn.
{w}{w}{w}{w}, Sacrifice Contest the Malevolent: Exile target creature an opponent controls. You gain life equal to that creature's toughness.
Angels are known for loyalty and perseverance, but
it's quite rare to see an angel blatantly laughing in the face of death.