This mod changes the way that Wither Skeletons behave. In vanilla, there are numerous issues with their spawning, their drops, and it is generally regarded as a chore to grind for skulls. This seeks to remedy that by doing a few things.
1) Adding a wither skull fragment to the drop tables. The fragments can be crafted together to create a wither skeleton skull.
2) All skeleton spawns in the nether are changed to be wither skeletons. Vanilla randomly decides if a skeleton will be wither or not, which is frustrating. This makes all skeletons spawned turn into wither skeletons, as long as they are in a Hell biome.
3) Stone swords and bows are removed from the drop tables of wither skeletons. No more annoying filters for dealing with them.
4) The immolation blade is also added, which will cause all skeletons to always drop wither skeleton skulls.
The configuration file allows users to edit every aspect of the mod.