Powder Ghast

The  is a mob that spawns randomly in Dwarven Mines at any time. It's not a part of the regular cycle of events, and instead is a random occurrence. The  can spawn in one of the following locations: Divan's Gateway, Rampart's Quarry, Cliffside Veins and Forge Basin.

Players will receive 100 Mithril Powder for every hit that lands on its hitbox and there isn't any final reward or announcement upon defeating it. When one spawns, the following message will announce in chat:

Tips

 * Bows are the only efficient way to attack it since it immune to magic and melee damage.
 * Runaan's Bow is particularly useful when fighting it since each bow shot launches 3 arrows and, thus, triple the powder.
 * By using Spirit Boots or Tarantula Boots, players are able to stay close to it and damage it.