Acoda, your "curse breaker" would only lift small thrown curses that used personal power only. Many curses work outside of the victim and are not a black cloud around or within. To break a curse from an experienced practitioner that created a battery source or evoked or invoked a spiritual being for aid in his/her working, you would need far more than a black candle, some imagery and a simple chant.
As for death curses, I don't really care what name the curse has, you can create a poppet of yourself out of living organic material that quickly decomposes such as a potatoe, drawing the curse to it instead, and bury it. When the poppet dies, the curse will believe it has done its deed and disappate.
My personal way destroys curses but it is for the advanced and I won't disclose that to anyone besides someone I know that has the capability to do it without harming themselves.