Corvus, Agent of Shar

Vow of Poverty - Corvus cannot be equipped.
{u}{b}, Sacrifice a creature: Draw a card.
{1}{g}{b}, Sacrifice a creature: Destroy target
artifact.
{2}{w}{b}, Sacrifice a creature: Corvus gains shroud until end of turn.
{3}{r}{b}, Sacrifice a creature: Corvus gains +3/+0
and first strike unil end of trun.
{4}{b}{b}, Sacrifice a creature: Corvus gains
deathtouch until end of turn.