Seven Seals

The Seven Seals is a spell created by the Casters under Gilgamesh and Inanna millennia ago after the demons returned to the earth without the angels to fight them. The Seals--represented by important and dangerous events, the first of which is Lilith being released from her prison--are what prevented the demons from returning to earth. The Seals also prevented the main body of Guardians from returning to the earth, and severely weakened those that remained.

In 1867, the demon Mehsharet broke the first seal by releasing Lilith, who in turn attempted to break the rest of the Seals and bring the Lucifer and the demons back the earth to wage war once again.

Unfortunately, Lilith was successful. She broke all six Seals, and Lucifer was allowed back into the world with his legions. The power of the seals also allowed the Guardians to return and restored what strength they had lost. Michael chose Ariel of Judah to be his host and together the two slew Lucifer, resulting in their deaths as well.

The Seals are:The Rise of Lilith, the Death of 77 Witnesses, Sacrifice of Supernaturals, Return of the Fenris Wolf (Swallows Sun/Moon), Collapse of the Other Side, Righteous Man Shedding Blood in Hell, and the final seal is the Rise of the Four Horsemen using the Book of the Damned
 * 1) Rise of Lilith--The demon queen Lilith freed from her prison beneath the city of Uruk.
 * 2) Death of 77 Witnesses--77 Wiccans slaughtered
 * 3) Sacrifice of Supernaturals--One of each Supernatural race killed at sacred altars, their blood drained
 * 4) Return of the Fenris--The wolf who ate Tyr's hand breaks from from its chains, and the sun and moon become shadows
 * 5) Collapse of the Other Side--Lilith and the demons close the portals to the Other Side, cutting the Casters off from the power and wisdom of the Ancestors
 * 6) Righteous Man Sheds Blood in Hell--After learning of Elio's death at the maw of Fenrir
 * 7) Four Horsemen Read from the Book of the Damned--Conquest (Famine), War, Famine, and Death read a spell from the Book of the Damned, then release Lucifer