Skeletal horror

The Skeletal horror is a monster which may be killed once a week after completing the Rag and Bone Man and Fur 'n' Seek wish list miniquests. While fighting it, both hands and the tail will come off, and its combat level will go down. Pick them up and bury these to make its level stay down. After the parts are buried you can kill it and talk to the Odd Old Man for your reward. The first fight will reward you with 10,000 Slayer experience and 7,000 Prayer experience. To fight the Skeletal Horror again you must first talk to the Odd Old Man and ask him to rebuild the creature for you (he will then rebuild the creature every week for you to fight it). Every subsequent fight after will reward you with Slayer experience and Prayer experience based on your levels in the respective skills.

If you die fighting the Skeletal Horror, your tombstone will appear outside the entrance to the stairs leading to the battle, so you can get your lost items back safely if you can make it back in time. Since you can only teleport once with the Bonesack/Ram skull helmet another fast way to make your way back is by using Sliske's Invitation box.

Strategy
The Skeletal Horror can be dangerous if unprepared, or for lower level players. The Skeletal Horror will not attack you with the attack style that you are praying against (e.g., if praying against Magic, it will use Melee, and vice versa), so high healing food such as Monkfish or Sharks is recommended.

It is not recommended to use Armours below level 70 to fight the Skeletal horror as it can hit exceptionally high if you do. A high leveled player should be able to defeat the Skeletal horror without any issue. Since killing a Mithril dragon is a requirement for completing the second bone wish-list, players who have unlocked the ability to fight the Skeletal Horror should be well prepared to fight it.

Note: Despite being a monster made from the bones of dead creatures, it is not considered undead, and therefore is unaffected by the Salve Amulet or Salve Amulet (e).

Magic
The suggested way to kill this monster is to use Magic, as the Skeletal horror is most notably susceptible to magic attacks. Magic armour also provides excellent defence against both of its attack styles.

Other styles
If Melee or Ranged combat is prefered, it's suggested to use the highest level weapon(s) and armor you feel comfortable risking, as the Skeletal horror is more resistant to these styles than magic. Protection prayers or Deflect Curses are highly recommended.

If you find the fight is still too difficult, a dwarf multicannon can be placed in the arena to provide additional damage. Dreadnips and Summoning familiars such as a Beast of Burden with extra food or a Unicorn stallion with Healing aura scrolls can be of additional aid as well.

The healing and defensive buff from the Enhanced excalibur makes it a handy accessory for the fight.

Mechanics
For every 12,500 damage dealt to the Skeletal Horror an appendage will be thrown to a corner of the battlefield. First the right hand will fall off, then the left hand, and finally the tail.

When an appendage is lost the Skeletal horror will become weakened; lowering the combat level, the max hit, accuracy, and defensive capabilities of the Skeletal horror. The appendages must be picked up into the players Inventory and buried. If left on the ground or in your inventory, the appendage will reattach to the Skeletal horror healing back the damage dealt, and restoring its combat stats.

Note: It is possible, albeit difficult to kill the Skeletal horror without burying any of the appendages.

Slayer experience
The minimum Slayer level required to finish the prerequisites of fighting the Skeletal Horror is level 73. Only the experience rewarded from that level onward is shown below.

Prayer experience
The minimum Prayer level required to finish the prerequisites of fighting the Skeletal Horror is level 30. Only the experience rewarded from that level onward is shown below.

Trivia

 * In the old diary, it is suggested that the Skeletal horror's skull was the model for the black mask.
 * The Skeletal Horror is supposed to be an ancient beast yet most of its bones are from other creatures. Some, such as the skull, are presumably the original bones of the ancient beast that the Odd Old Man found.
 * The Skeletal horror has one of the 'non-chafing manacles' that was on the Odd Old Man's wishlist after completing the Rag and Bone Man quest and the first wishlist. It appears that the Golden Fleece is what makes it non-chafing.
 * All the bones retrieved from Rag and Bone Man, Rag and Bone Man wishlist and the Fur 'n' Seek wishlist can be found on the Skeletal horror.
 * The Skeletal Horror dropped elite clue scrolls 1/20th of the time after 4 August 2010. It was changed to 100% after 26 May 2015.
 * The Skeletal Horror is currently the only Elite clue dropping monster that does not drop Hard clues.
 * During the cutscene before the fight, the Skeletal Horror's health bar is set to 3,250 HP