What is passive skill?

Related questions

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3. How many passive skills are there in Path of Exile?
4. What are receptive language skills?
5. What's Ghostbin?
6. What are receptive skills?
7. Is listening a passive skill?
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Tags

1. #directly
2. #stats
3. #modifying
4. #damage
5. #passive
6. #active
7. #fireball
8. #overall
9. #boost
10. #skill
11. #bonuses
12. #other
13. #would
14. #instance
15. #modify
16. #skills
17. #usually