Justice League United #12

A mission to save our world from cosmic calamity has separated Swamp Thing from the Green, threatening to destroy him forever. Only an improbable team of heroes and villains, led by Poison Ivy, can traverse conflicting realities and save Earth’s plant elemental from non-existence.

Characters: Adam Strange, Alanna Strange, Alec Holland, Animal Man, Barbara Gordon, Blockbuster, Chief, Courtney Whitmore, Equinox (DC), Etrigan, Mera, Negative Man, Poison Ivy, Robotman (Cliff Steele), Steel (John Henry Irons), Swamp Thing