What does an end Crystal do?

Related questions

1. What does a smithing table do?
2. How do you make an observer?
3. Is the Guardian the same as the observer?
4. How do you make smooth stones?
5. Who owns the Observer?
6. What is an example of actor observer bias?
7. Do Eyes of Ender break?
8. What does Dragon's Breath do?
9. How much is the Observer on Sunday?
10. How do you tame a Ocelot?

Tags

1. #dragon
2. #block
3. #renamed
4. #horses
5. #placed
6. #skeleton
7. #bedrock
8. #obsidian
9. #supposed
10. #obtained
11. #generate
12. #underneath
13. #respawn
14. #drops
15. #portal
16. #several
17. #ender
18. #crystal
19. #destroys
20. #placing