Minecraft wiki entry for Combat, associated text: Added alongside the woodland mansions, these mobs deal the highest natural melee damage on a single player world (7.5 × 3.75 on easy, 13 × 6.5 on normal, 19.5 × 9.75) on hard, and almost always spawn in groups with other vindicators, mostly as part of illager patrols. Since the woodland mansion has many areas where a mob can hide (as there are some generation problems with the torches, so the vindicators will not be alone), it is easy to be ambushed and swiftly killed, especially when entering bedrooms, their primary spawn location. As the mansion is already dimly lit, it is best to explore using night vision, have another player with the player, if possible, and keep their hostile mob noises up since vindicators make grunting noises while idle.