#ONEPIECE1170
Oda is actually cooking with this, Loki having the Nidhogg Zoan Fruit was foreshadowed from the start.
Nidhogg is a serpent-like dragon that lives underground in Hel, beneath the World Tree chewing away at its roots.
That’s exactly where Loki was chained… and let’s not forget he turned Elbaf’s Hel into his playground.
Loki literally states he will Destroy the World, which is in reference to Nidhogg's part in Ragnarok.
Even Loki being born with serpent-like eyes feels like fate pointing him straight to this Devil Fruit.