> 2BB
> Legendary Creature - Cat
> Flying
> Whenever you cast a spell, you may return target creature card from your graveyard to your hand.
> 2/2
That's actually a fairly plausible card, in terms of mechanics. It's thematically appropriate for black, it's about the right cost, it's powerful but specialized (returns creature cards only, and only to hand rather than to play), and it's legendary to avoid multiplying its effect. This would work well in a deck with many creatures with "enters the battlefield" effects (common in black, as well as blue and red which are often used together with black), as well as many ways to sacrifice cards. Would even work as the general in an EDH/Commander deck.
The only thing slightly odd is the flavor: it's a flying cat. And with the right art (and perhaps a "black cat crossing your path" joke in the flavor text), that could work quite well.