If you want to get to fafnir in 1 shot just do the following.

After you speak to that rabbit chick at Mt. Bur-Omisace and accept the hunt, Paramina rift will again be in blizzard.

From your location go the following route.

Freezing Gorge, go to Head of the Silverflow --> Icebound Flow --> Karydine Glacier --> Silverflow's End.

Fafnir will be there 100% on your first try.
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