Dralion

A neutral mob with a unique look that looks like a combination of a Chinese dragon and a lion, making it a holy beast.
This mob will appear randomly in the Overworld, Nether, or End, and with a very low probability.
And there is only one mob in one world.
As soon as it is attacked, it will be hostile to counterattack.
Of course, if you kill it, it will never appear again, and the curse effect will be given to the killed player.
Of course, if killed by a mob other than the player (such as Wither or Warden), the curse effect will be applied to that mob as well.
The effect of this curse is on all friendly mobs (with the exception of Striders, Wandering Traders, villagers, snow golems and iron golems summoned by players, and tame mobs) and all neutral mobs (Piglin, Enderman, villages spawned iron golems, with the exception of Zombified Piglin) will now attack all at once.
The effect time is 30 seconds, and even if the player dies, it will continue until this effect expires.
Of course, even if you defeat this mob, you will not lose any experience points or items.
However, just being near this mob will automatically give you the effect of doubling your attack power and speed, and will automatically restore your health twice as much as normal.
If you have any other good ideas, please let us know in the comments.
Thank you for taking a look at my idea.