Once there were 7 seals that bound something. One by one they broke,and brought the end of the current civilization.
The first that broke released the demons,and the vices of man.
The second devils,and the lures of conquest
The third daemons,and the four horsemen.
The fourth the dark lord,father of monsters,whose wife bound him in the underworld.
The fifth the star of Hadar shone,and released the Far Realm against this world.
The sixth gave (Don't remember, little help?)