How did Maz get Luke's blue lightsaber?

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Tags

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2. #unsuspecting
3. #bespin
4. #darth
5. #planet
6. #infiltrate
7. #students
8. #anakin
9. #lightsaber
10. #ranks
11. #easily
12. #continued
13. #converted
14. #cloud
15. #could
16. #force
17. #vader