Runebound behemoth

The Runebound behemoth is a Dungeoneering boss monster released on 19 August 2010. It is only encountered at the end of an occult floor.

The behemoth is a large beast with the ability to use all three protection prayers simultaneously. While these prayers are active, it is invulnerable to any damage. However, within the room are three active crystals (mage, range, melee) that must be deactivated to remove the respective protection prayer for a few seconds. Players must wait nearly 30 seconds before deactivating each crystal, meaning that 2 attack styles are advised for faster killing.

Like other behemoths, if a player runs under the Runebound behemoth, it will trample the player under its body, hitting between 300 and 400. Caution should be taken when entering a room and running to deactivate a crystal.

The Runebound behemoth also has a special attack, in which it first roars charging energy, then spreads a green/yellow sort of slop, a magic spell with a short delay before hitting the floor and thus hitting you. Massive damage is dealt from this attack, up to 900 damage each time. Whenever it uses this special attack, he resets his protection prayers and the crystals do not become active again, making you having to wait if you had just activated them.

There are currently two known ways to avoid its special attack.

The recommended method is to teleport outside when the Runebound behemoth is charging the special attack and re-enter a little bit after.

The other method is running towards the behemoth when you are at a distance

Drops

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Trivia

 * The Runebound behemoth is the second monster to use multiple protection prayers simultaneously. The first is the Kalphite queen.
 * This is the first monster to protect from ALL forms of attack at once.
 * Runebound behemoths were created, of course, by binding runes to a behemoth, resulting in the creature to become better controlled and more docile. The librarimancer, Lexicus Runewright, created this method of behemoth taming.
 * The music track's unlock hint reads "This track unlocks default info".
 * The method to defeat this boss is similar to that of Night-gazer Khighorahk since the player must operate devices located around the room in order to damage it.