"Our stories define our reality." —Ugin
-Scroll of Fate
seen from Germany
seen from Germany
seen from Germany

seen from Malaysia

seen from United States
seen from United States
seen from Hong Kong SAR China
seen from Brazil

seen from Singapore

seen from Singapore
seen from United States

seen from Türkiye
seen from Japan

seen from China
seen from United Kingdom
seen from Libya
seen from Singapore
seen from Brazil

seen from United States
seen from United States
"Our stories define our reality." —Ugin
-Scroll of Fate
If I manifest Nexus of Fate with say, with a Scroll of Fate, and the manifested creature dies, will Nexus of Fate's replacement trigger activate and put it back in library or does it simply hit the graveyard as a 2/2 and then stay in graveyard?
It will just end up staying in the graveyard.
For a replacement effect to be able to modify an event, it has to exist before that event occurs. Since a face down Nexus of Fate has no abilities when it dies, so it doesn't have the shuffle ability before it actually enters the graveyard. By the time it's face up in your graveyard, it's too late to apply the replacement effect and so it just stays there.
Scroll of Fate by Piotr Dura