REQUIRES OPTIFINE OR CIT RESEWN!
Rename any Sword, Axe or Pickaxe to anything that includes the word 'hammer' to turn it into a hammer.
Rename any Sword, Axe or Pickaxe to something that includes the words 'War Axe' to turn it into a War Axe.
Fully compatible with any resource pack that changes the resource block textures. The hammers and axes will use those textures when other resource packs are loaded.