How did Illidan become a demon?

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Tags

1. #which
2. #fought
3. #darkness
4. #skull
5. #demonic
6. #primary
7. #absorbing
8. #people
9. #crusade
10. #energies
11. #malfurion
12. #expansion
13. #slipped
14. #illidan
15. #became
16. #banished
17. #demon
18. #world
19. #warcraft
20. #burning
21. #though
22. #antagonist
23. #defend
24. #after