Backing Up and Replaying the Citadel Arena

Because the Ender Dragon boss fight can damage blocks and only runs once by default, taking a few standard precautions lets you replay the Dragonfire Citadel Sanctuary Map cleanly or test different weapon loadouts whenever you want.

Creating a Clean Arena Backup

1. Exit to the main menu right after verifying your spawn, select the Dragonfire Citadel world, click Edit, and choose Open World Folder.

2. Copy the entire world folder into a separate backup directory on your computer before starting the boss battle.

3. Whenever you want to replay the fight from scratch with untouched grand towers and stone structures, place a fresh copy of that backup into your saves folder.

Protecting Structures and Rematching

1. If the Ender Dragon clips through and destroys vulnerable decorative blocks during flight, open your world to LAN with commands enabled and disable the mobGriefing game rule to preserve the custom fortress.

2. After clearing the sanctuary, locate the bedrock exit portal in the arena and place four crafted End Crystals on its outer rims to summon another Ender Dragon for an immediate rematch.