Any spell casting where blood is involved is said to be a black magic spell.
You may try this Black Magic
Spell to get back your love, or your love who is with some one
You need to use any belongings of the person you love like, hair, clothes any thing but it has to be his.
You may take the belonging,
in a small bowl. Then cut your hair (few strands) and put it In
the container. Then you will need white owls blood and before
putting the blood in the container say these words 100 times,
ZAKA DAAOON ZAADA ________(your name). Then pour the blood and
keep it for one day. The next day you may again say ZAKA DAAOON
ZAADA ________(the name of the person you love) and then pour
rose water in it. Then wait for 5 days and then burn every thing
that is there in the container into ashes. Collect the ash and
throw it in the cemetery. You will see that the person you love
will be back in your life