Swamp Thing by Mark Millar

After a series of difficult trials, Swamp Thing has conquered the five Elemental Parliaments, and is now untouchable. It's up to Abby and John Constantine to stop him--but can they prevent catastrophe by the hand of the godlike Swamp Thing? With jaw-dropping cameos from Killer Croc and even Abby's daughter, this series finale is not to be missed! Collects Swamp Thing #161-171.