Is Excalibur Umbra a prime?

Related questions

1. Where can I find Chroma parts?
2. Is Warframe an mmorpg?
3. How do I increase my Warframe capacity?
4. What is riven Warframe?
5. Do you keep Excalibur Umbra?
6. What does saryn mean?
7. What is Chroma prime?
8. Is there an Excalibur prime?
9. How do you get Garuda in Warframe?
10. What is riven disposition in Warframe?

Tags

1. #update
2. #variant
3. #build
4. #warframe
5. #first
6. #while
7. #chinese
8. #released
9. #energy
10. #three
11. #later
12. #sporting
13. #armor
14. #prime
15. #umbra
16. #polarities
17. #excalibur
18. #added
19. #losing
20. #higher
21. #global