Minecraft wiki entry for Raid_farming, associated text: Raid farming is a means to obtain items dropped by raid mobs (pillagers, vindicators, witches, evokers, and ravagers). Farms can be made from a village with a spawning platform for the raiders, or be made at a pillager outpost. In Bedrock Edition, a raid farm also yields special items dropped by these mobs during raids: emeralds, enchanted books, iron tools, and iron armor (of which half have enchantments). In Java Edition, getting Hero of the Village has the additional benefit of making some resources renewable, especially clay.