Complex sentence: Serpentor, revived after his death in the Marvel series, launched a global attack from Cobra Island, it turned out that Firefly and Derenko were recruiting for the Coil, Serpentor's new army.
Split into simpler sentences: Serpentor, revived after his death in the Marvel series, launchesa global attack from Cobra Island. It is revealed that Firefly and Derenko were recruiting for the Coil, Serpentor's new army.