Most common hostile mobs can be killed with a 24-block drop, although witches require 30 blocks. Different mobs need to be dropped different distances in order to kill them. The most important aspect of a fall damage grinder is the drop height. These include iron golems, chickens, cats, and flying mobs such as blazes. This method is often done in combination with a mob farm where the mobs are forced into water streams and can easily be dropped from a lethal height. Fall damage is one of the simplest and quickest methods of mob grinding.
