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

seen from Argentina

seen from Malaysia

seen from Brazil
seen from United States
seen from United States

seen from Malaysia
seen from United States

seen from Malaysia

seen from Malaysia
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seen from Albania
seen from China
seen from United States
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seen from United States

seen from United States

seen from United States
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seen from Brazil
seen from France
"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