Bal

Bal is a Boss that spawns every 5 minutes in the Khazad-dûm if a player is nearby. Killing the boss allows players to obtain the Topaz Crystal. His health is displayed as.

Spawning
The Bal spawns about every 5 minutes in the middle of Khazad-dûm, which can be found randomly generated in the lower Y levels of the Crystal Hollows. When the previous Topaz Crystal disappears, the Bal will appear in the center as an expanding Magma Cube.

Drops
Upon being defeated, Bal has a chance to drop items on the ground, similar to how items are dropped from Ender Dragons. Over the duration of a Bal fight, around 25-40 items will drop. These items can be:


 * (rare)
 * (rare)
 * (rare)
 * (rare)

Behavior
Bal will hop towards the closest player, summoning Fire Bats and Blazes to attack the player when hit, and shooting fireballs at an interval of once every hop. In addition, it will deal contact damage that pushes the player away like a normal Magma Cube, although the knockback can be avoided with a knockback resistant item. These attacks deal low damage, with the Fire Bats and Blazes ignoring the player if they have an Intimidation Artifact or a Parrot Pet.

When an item is dropped, there is a chance that Bal will summon Fire Bats or Blazes.

Upon being defeated, it will return to the middle and slowly shrink into nothingness. After that, the Topaz Crystal will appear nearby.

When alive, it makes loud slowed enderman angry sounds, which can be heard from a medium distance away.

Bal Dialogue:
Upon hitting Bal for the first time:


 * You cannot best me!

Upon Bal dropping an item:


 * Grrrr! You won't be able to hit my Fire Bats!
 * Bah! Come forth my minions! Fly above, take them out!

Upon defeating Bal:


 * AGGHHHHHHHHHHH!

Narrator Dialogue:
When Bal is about to spawn:


 * The ground starts to shake and the lava bubbles...

Upon damaging Bal to certain health thresholds:

At 75% health (50 damages dealt) :


 * The bosses outer shell looks to be weakening!

At 50% health (100 damages dealt) :


 * Half way there! The boss is starting to become weaker!

At 33% health (133 damages dealt) :


 * Nearly there! The boss is shaking it can't last much longer!

Upon defeating Bal:


 * The boss looks weak and tired and retreats into the lava...

Trivia

 * The Bal is based on the Balrog from J.R.R. Tolkien's Lord of the Rings series.
 * Its spawning place, Khazad-dûm, is also based on the place of the same name.
 * It used to be possible to trap Bal by building a cage around its spawn point, but building in Khazad-dûm is now restricted in order to prevent it.