[quote=@Zelosse]
Now how the hell does a god of nightmares make his entrance. Hmmm.
I'm now open to suggestions
[/quote]

Perhaps we can fabricate a history between your god of nightmares and my dimensional dreamwalker, Aforgomon.  My character consumes dreams and nightmares for sustenance and power, and naturally would be most attracted to the strongest ones: those forged by a dark god.  Thalios and Aforgomon could have easily had a history of the alien god slipping in out of nowhere when your character is inflicting nightmares and eating them, thereby frustrating Thalios.  Now that Aforgomon is on earth, distracted by its experiments on the dead and dying, it could be a perfect time for Thalios to spring a trap/ambush and attack the strange being who's been such a thorn in his side.