Cheap sweet berry magma cream farm

A magma cream farm on the nether roof. Magma cubes spawn inside its walls, are drawn to an iron golem and die in a patch of sweet berry bushes. A hopper minecart on powered rails collects the magma cream for the storage system while you wait at the AFK spot. The title calls it a cheap farm.

• Do not build it in a soul sand valley. Skeletons spawn there with the magma cubes and kill the iron golem. One builder reports it, a reply names the cause.