The Splash Potion of Harming deals 6 damage (3 hearts) instantly to players and mobs within its splash radius. It is brewed by adding Gunpowder to a Potion of Harming in a Brewing Stand. This potion is highly effective as a weapon in combat, especially for damaging multiple enemies quickly. However, it has no effect on undead mobs, such as Zombies or Skeletons, as they are immune to its effects. Use with caution, as it can also harm allies or the user if thrown carelessly.