Midsummer Eve (Late-Game Gameplay Event)

Minecraft has raids for pillagers, but witches don't have a unique event centered around them. I think it would be interesting to add a rare late-game event inspired by folklore.

After a player has earned the "Cover Me in Debris" advancement and has gone several nights without sleeping, there is a small chance that an event called Midsummer Eve begins.

During this event:

• Several witches spawn around the player's base instead of normal hostile mobs.
• They work together to attack the player using potions.
• They can occasionally inflict the Darkness effect, making the fight more challenging and creating a spooky atmosphere.
• The event ends when all of the witches are defeated.

As a reward, the final witch could drop a unique item, such as a Token or Key, that can be used to unlock special content in late-game areas. The exact reward and its function could be decided by Mojang.