The Potion of Harming (II) delivers a powerful effect, dealing 12 points (6 hearts) of instant damage to the target. It is brewed by combining a Potion of Harming (Instant Damage I) with Glowstone Dust in a Brewing Stand. This enhanced potion is a potent tool in combat, capable of significantly weakening or eliminating players and mobs. However, it is ineffective against undead mobs like Zombies or Skeletons, as they are immune to its effects. Use carefully to avoid self-inflicted damage.