Complex sentence: Blue Devil sacrifices his life against Hermes Trismegistus, but as a true devil he is restored to life again, tasked to roam the Earth with Lucifer's Trident banishing escaped demons back to Hell.
Split into simpler sentences: Blue Devil sacrifices his life fighting Hermes Trismegistus, but as a true devil he returns to life again. He is tasked to roam the Earth with Lucifer's Trident sending escaped demons back to Hell.