Negromancy is basically just like necromancy but it allow Bill Cosby to save the people who die first in an event: the black people. He is also able to strengthen the blacks with BLACK magic and increase their strength. He can also increase their genes so they are stronger and have bigger. Okay let's not talk about that. He can make blacks exceptionally good at cotton-picking and other farm work and he can give them the ability to transform into Africans who have natural hunger and get stronger the more they eat. Might add more