Swift Assassin

Flash
When Swift Assassin enters the battlefield, you may destroy target creature. If you do, you lose life equal to that creature's toughness.
Black sorceries cards you own have flash and split second.
Whenever you cast a black sorcery, you may draw
a card. Then you lose 2 life unless it's not your turn.
"A good assassin won't give the target a second breath."