Mm... not keen on the minor bleed in both the second and third abilities here. It's really hard to find abilities costing that are common to red and black, though, I'll give you that.

"Brute damage" is unusual for black because it's usually linked to lifegain (most recently with Corrupt, and usually done to players as life loss, as with extort) or to the graveyard (Corpse Lunge), but it has been used very recently as a effect on Bump in the Night and Fires of Undeath.

I'd try to replace on of them though, since 2 "damage" effects looks very inelegant. How about "if target creature would be destroyed this turn, exile it instead"?

I'm not sure exiling creatures on the way to the graveyard is in black's color pie.

Note that dealing damage to a creature and giving it -X/-X accomplishes almost the same thing, and dealing damage to a player and making him or her lose life does, too. So it doesn't play weird at all, but it does read as strange as Murderous Redcap, Bump in the Night and Strangling Soot.