Deadeye Desperado

Haste
{b}{r}: Shuffle your library and then reveal the
top card. If a black card is revealed this way,
destroy target nonblack creature, otherwise
sacrifice Deadeye Desperado.
"When ya spend ya whole life gamblin', ain't much
gonna be diff'rent when ya dead. Heh."
- Some backwater hick who happened to spout one profound sentence their whole life. And let's be honest, it's not even that great.