Interesting idea, but I would really like keeping it as pure CC. I think Death needs a more efficient CC card, havent looked in all card ideas forum, but maybe there are some alike this. Anyway, its an option, if other card is put in play, no need to add this one.
That said, if Im going to improve the card, I could use something alike to "when target creature dies... gain its attack in HP, or draw a card, etc.", something that can eventually make you throw it on you own card for fast effect. Any ideas about this?