Angel of Spite

Flying
{2}{w}: Destroy target creature an opponent controls with power 4 or greater. If the target's power is higher than Angel of Spite's by 2 or more, tap Angel of Spite. This ability can't be used while Angel of Spite is tapped.
Some exist not to protect the righteous, but to assist in bringing down their enemies. Which, in its own way, could be considered a form of protection.