Replying to @vzpax So here is a walk-around of it in creative mode. it's really simple. The lava is held up by signs and the hoppers catch the loot the same as any autofarm. I have the villagers confined to the area with their work stations and the beds floating. the most important part is the water, like the way you do spawners the water has to guide the golems to the center so they fall in the hole.