Magnus, Prince of Blood

{1}{b}{b}: Destroy target creature. Activate this ability only as a sorcery. You lose 2 life.
Whenever a creature your opponents control dies, you may draw a card. If you do, each opponent loses 2 life and you gain that much life.
"Lucia, sister, you are the only light I can see anymore, and whatever the cost, I refuse to let that light be extinguished."