Effect: Immortality and flight.
This mystery juice from Batman - possibly a reference to the yellow faced yet friendly demon Etrigan originally summoned by Merlin - or maybe just some of Ra's al Ghul's blood.
Either way this stuff is rockin. Jump off into the oblivion and cruise a little bit and kick some baddies, can make you stronger and pulls you back from the brink of death. Side effects may include death by Ra's al Ghul's hallucinatory minions.