Complex sentence: However, the Dragon of the Moon was finally undone when the Interloper and Valkyrie sacrificed their immortality, channeling their power through Manslaughter and Andromeda towards the Dragon and instantly carbonizing all three of them (the Dragon, Moondragon, and Gargoyle).
Split into simpler sentences: However, the Dragon of the Moon was finally undone when the Interloper and Valkyrie sacrificed their immortality. Channeling their power through Manslaughter and Andromeda towards the Dragon, instantly carbonizing all three of them (the Dragon, Moondragon, and Gargoyle).