The Oroborous is a snake that consumes itself. A choice name for this endeavour.
To wear a Christian apologist hat. It is a religion whose doctrine and philosophy of 'Do unto others, as you would have done to you'. Is a viewpoint which is trying to be usurped by 'Do what thou wilt'?(discuss! A thorough explanation of this assertion is detailed in the work of Mark Passio).
You raise a good point about the consumption of blood in Abrahamic religions and the practice of sacrifice and meat consumption. Anyone who is interested in this concept should research this context as to who is allowed to do what in relation to God/ god's/human kind.
To relate this to David Icke's work. He now seems to be looking at Gnostic texts such as the Nag Hamnadi. The Book Of Giants in which 'we read that the idea of mixing with human females was discussed and permitted by Shemihaza, the leader of the "wicked" angels, some 200 in total.'
Peace and Love