I'm coming back to Minecraft after a long absence, and pursuing new objectives and opportunities. I've read that one can respawn the Ender Dragon, and I'd like to do this at some point. In order to prepare as best I can for the fight, and not lose resources unnecessarily, I'd like to know what parts of the End will change when I resummon the Ender Dragon.
Will the exit portal stop working?
I have read that the tops of the obsidian pillars will be reset to their original form, destroying any added blocks. What are the dimensions of the volume that is reset?
Is there anything else that gets modified besides the exit portal and the tops of the pillars?