Java Edition 21w18a

21w18a is the twentieth snapshot for Java Edition 1.17, released on May 5, 2021, which make changes to screaming goat, experimental ore generation, and infested blocks

Blocks

 * Infested Blocks
 * Infested deepslate now have half the destroy time of their non-infested counterpart.

Mobs

 * Goats
 * Screaming goats will use their ram attack more often than other goats will

Experimental
Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.


 * Caves
 * Cave carvers generate below y 0 in Ocean biomes (they didn’t before, it was an accident)
 * Increased the minimum size of noodle caves and carvers, to make them easier to traverse and less likely to break up into fragments.
 * Noodle caves no longer generate above y 30, so the surface should be less riddled with holes.


 * Ore distribuition
 * Reduced Copper spawning a bit, to compensate for large ore veins
 * Large ore veins are slightly more rare and slightly smaller on average. But the size varies a lot so you can still find huge ones.
 * Increased chance of finding raw ore blocks in ore veins
 * Removed Deepslate blobs above y 0
 * Extended the vertical range of the smaller blobs of iron ore, to make it possible to find iron in caves near the surface.
 * Slightly reduced the amount of normal-sized iron blobs, to compensate for large ore veins and the increased range of smaller blobs.