Uhg- A terrible thought

[Lord Elrond]

I too am in agreement however I don't think that he did it to try and create some new powerful being. More likely he was simply once again trying to suck the beauty and light out of Eru's creation. More often he perverted things out of malice and hate than to try to gain power from them. His most powerful servants the balrogs were not created, he corrupted the elves and turned them evil for the main purpose of destroying something beautiful rather than gain power from them. True the orcs did give him power but he had many creatures that were much more powerful than orcs on his side that were pretty much twisted and evil from the beggining. So yes I agree that he wanted to corrupt Luthien but not for a new powerful being.