DragonSurvival: Revival Ancients

This modification remakes Ender Dragon to match the style of the Dragon Survival mod.

It was originally developed for this contest, but because of my unawareness, a trivial crash-causing error took me 2 days to fix, and as a result, I did not have time to release it before the deadline.

With this modification, the vanilla ender dragon will be completely replaced by its counterpart from this mod, it will have a new model and texture, beautiful animations, new attacks and more appropriate behavior.
[There will be pictures showing what it looks like, but I don't have time to make them yet.]
All vanilla processes, for example, the "event" of the battle with the dragon are saved. This dragon is much stronger than the usual one. He has 500 healing, and it's almost impossible to kill during his regeneration if living end crystals. But at the same time, he will never be the first to attack, only if you are the first to attack him, then he will start attacking you, as evidenced by his message in the chat. 
Attacks of the new Ender Dragon:
1. Breathing with the acidic breath of the dragon (it will breathe on you with its breath, which will then dissolve you for some time, causing additional damage).
2. Bite (a type of melee strike, quite painful).
3. Kick (a type of melee strike, quite painful).
4. Jerk (will make a spinning jerk in your direction).
Dragon's Breath is now extracted by filling bottles with dragon lands in crafting (reusable (6 uses)), which drop from the Ender Dragon with a 100% chance.
The ender dragon also loses its fangs and scales, but they have no use yet.

To keep the portal to the ordinary world open, it is now necessary to find a dragon egg on it. If you pick it up, the portal will close, and if you return it back, then after a few seconds the portal will reopen with a small animation.
[There will be pictures showing what it looks like, but I don't have time to make them yet.]
Also, to revive the ender dragon, it is necessary to find the dragon's egg on the portal, otherwise the crystals will simply explode. The egg will disappear during the battle, but it will return after the battle is over.

Initially, a lot more content was planned in the mod (which will be added in the future). Among the planned ones will be the primordial dragons, hence the name of the modification.

Updates follow...

Detected bugs:
None.

Incompatibilities:
ModernFix - changes the logic of interaction with the dragon's egg (I don't like this incompatibility myself, but for my part I do not know how to fix it).
Dragon Mounts Remastered - changes the dragon egg to its own (theoretically, I could make support for the dragon egg from that mod, but the very presence of this mod breaks the idea of this, so it will not be).

Although MCreator was used during the development, a third of the entire mod code was written by me manually.

English is not my native language, so this message was translated using Google Translate.