Have you heard of the wither? If you have, have you spawned it in and defeated it? This post is all about the wither!
The wither is a boss mob that is not found. The player has to summon it in. When killed the wither drops 1 nether star, which is needed in order to craft a beacon. The materials needed to make a wither are 4 soul sand, and 3 wither skeleton skulls. First place the 4 soul sand in a T shape, With 3 peices on top and one on the bottom. Then place the skulls on top of the 3 top blocks. Make sure to summon the wither away from your builds because it shoots wither skeleton skulls that will explode when they hit the ground. Mobs killed by the wither will drop a wither rose.