Minecraft wiki entry for Wandering_trader_farming, associated text: There will need to be a platform over an ocean with lighting. There will need to be a bell in the middle, a hole around the bell with trapdoors to trick wandering traders into walking over it and a water stream in that hole which will transport the trader to the player. There will also need to be a system which will activate and deactivate a dispenser which will dispense lava to the trader after the player is done trading (using a lever is best), and also signs and a collection system so that the leads and leather won't be burnt.