Recreate witch system in raids

My idea is to give a unique function to the witches in the raids, that they are behind all the invaders or any mafia that protects them and from their position they are constantly giving you negative effects, if you damage their allies it will give them regeneration. potion.

Why this change?
-They are quite easy to kill.
-Their mechanism of giving you negative effects is very good but they need someone to protect them.
-Can be used to make raids a bit more difficult.

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This is my idea for Minecraft
Thank you for reading! :)