Fell Omen - There are two here, one for if you fail, and one if you succeed. If you die while fighting the Fell Omen, on top of losing a level, ...

The Fell Omen's sudden invasions have hopes high for other enemies to suddenly appear and attack the players. The Pursuer from Dark Souls 2, for example, would make a great candidate.

From personal experience, it's even rarer than the Augur and Fell Omen Raids. In this guide, we have everything there is to know about the Oldest Gaol in Elden Ring Nightreign.

You'll be warped to the plateau where you fought the Margit the Fell Omen in Nightreign's tutorial, but this time a unique boss will be waiting for you.