It wasn't the original Nil. They said Nil was destroyed. They were in a Nexus that was Mandrakks new Monitor World he dubbed Nil.
This version of Mandrakk isn't the same as the original in Final Crisis. Who at Full power, was the Editor of DC Comics that both CBR and DC editors confirmed as true. He lost his power. You saw the scans of that in that other post. You were aware of this.
Simple low level magician? He was stronger than the Presence and all the Endless. He was stronger than Barbados and Dream of the Endless specifically by infinite degrees. And that was just Neon. Quench was even stronger than Neon and Mandrakk literally killed both of them one scan before the first you posted. Which you were too scared to show.
Here, Mandrakk kills the same guys you said just beat him.
Here, the dead souls of both of them are teleported to the Forge because there is no Heaven or Hell in the Dark Multiverse. The Dark Multiverse doesn't house The Presence, or Michael, or Lucifer or any version of death that you've read in DC thus far. It is another fictive entity on its own and when you die there, you are sent to the World Forge's waters/lava and you end up swirling around in it until you vanish completely. You don't die. You are erased from existence. There is no God there. There is no Spectre, or Presence, or angels from Vertigo. Dream of the Endless cannot enter the Dark Multiverse. The Presence did not create The Dark Multiverse. The Presence did not create the normal Orrery and Multiverse. The 3rd Monitor did. He made the Presence and all the Endless. None of them have any power in the Dark Multiverse.
"The Dying GOD left your universe wounded, broken and defenseless."