Minecraft wiki entry for Sword, associated text: Some mobs can spawn with a sword and have an 8.5% chance of dropping them upon death caused by player. This chance is increased by 1% per level of Looting, up to a maximum of 11.5% with Looting III. Zombies and husks can drop iron swords, zombified piglins and piglins can drop golden swords, and wither skeletons can drop stone swords. The dropped sword is usually badly damaged and may be enchanted. Stone swords dropped by wither skeletons are never enchanted.