How do you make lightning weapons in Dark Souls?

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Tags

1. #through
2. #player
3. #requisite
4. #offered
5. #giant
6. #ember
7. #souls
8. #blacksmith
9. #standard
10. #chunks
11. #londo
12. #weapon
13. #create
14. #lightning
15. #upgrade
16. #require
17. #titanite
18. #ascension