I need more of this kite bottle for such potion arrows.
how can the ender dragon spawn again?
without moods
Thats is quite easy. You place 4 ender crystals (7x glass, 1x ender eye, 1x ghast tear) on the four sides of the fountain (in the middle). Now the dragon will spawn again and the portal will be destroyed.
This actually works with a command: / summon minecraft: ender-dragon and then the ender dragon spawns, but I don't know whether it will also get the "dragon breath".
I tried that but it didn't work out somehow
This is also a cheat. If you have not activated it in survival, this method will not work. Place the end crystals on the portal as described in my answer.
