Yes or No?
Do you think it adds anything to already hot sex, or is it just a fancy and pointless exercise?
Yes, I do put this in Black Magic because it is famous for being misused by male magicians to garner unlimited sex from female disciples.
I personally like it, but I prefer more tame behaviour from girls whereas tantra can go too wild to easily.
And also it can attract dark forces if done badly or with someone you do not trust, just like a ritual done wrong.