Ple-Sen
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The safety implied in the phrase "Revan's path" means that the journey to the forest is safe, and no beasts or bandits will jump out at you, rather than implying that spending the night there will be without consequences. I suspect that either spending the night in an inn provides certain benefits, or that, indeed, you can catch some debuffs in the forest. Since animists are close to nature, they will either have an advantage on rolls against these debuffs, or they will be completely protected from them. But, of course, it may also be that I am wrong, and spending the night in the forest does not have any negative consequences, while an inn simply costs the character a small amount.