Nether Wurm

Nether are a new mob that are a mix between a worm and a centipede. They come in two variants. Crimson and Warped. Crimson are are hostile and can be found in crimson forest. Warped are peaceful and can be found in warped forest. Normally they dropped netherack If you throw weakness potion on them, they will enter a curl position. If you kill them while curled. They will drop a netherball instead. Netherballs can be thrown like snowballs but they enters a player's inventory when they hit another player. They will also return to item form when they hit a block. Only warped nether wurms are breedable. However if bred in a crimson forest biome, they have a small chance of spawning a crimson nether wurm instead. The two variants also drop different types of nether ball. Warp drops one with durability. Crimson drop ones that last forever..