Slang term for the drug Fentanyl. It is an opioid analgesic, used as an anasthetic in medical practices, and is about 80 times as potent as Morphine.
Known to be the drug of which an overdose of was discovered to be the cause of the death of Domino Harvey. Thus, Domino's Bane.
1: What the hell are you on?
2: Nothing... just a little of Domino's Bane...