Illusionist

What if they added a villager looking NPC? One that appears like a regular villager but it’s clothing is slightly different.. and in fact has a witch like hat but blue or illuminated? This mob is dangerous and if you get close enough it will use magic to give the player illusions to confuse us , there were talks about this mob before but wasn’t added to the game , I think it would be a cool mini boss to defeat ??? Only 1 will spawn in difficulty normal / hard , it can have effects like spawning other hostile mobs around the player to trap them, fire surrounding them, or teleport the player to a random location.