Is there an Excalibur prime?

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Tags

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6. #already
7. #upgrading
8. #prime
9. #forums
10. #orokin
11. #longer
12. #founders
13. #warframe
14. #excalibur
15. #status
16. #program
17. #closed
18. #obtainable
19. #account
20. #which
21. #hunter
22. #available