I would love to see more Norse references in the game as if fits the theme here are my suggestions:
Sleipnir - Odin’s 8 legged horse
- Extremely rare spawn
- Untameable, unkillable, temporary
- Can be ridden, absurd stats, lasts longer than a horse
- hair can be pulled for a curious
Fenrir:
- Wolf but big, wouldn’t take much work to add in
Yggdrasil:
- Every world spawns 1 huge world tree which cannot be claimed or griefed in anyway way in a large circumference around it. I would say give it no other purpose than it’s cool and some experience if visited, making trying to claim it too much effort for nothing. Make every wandering sage get a quest to go visit it.