Serpentine helm

The serpentine helm is the best helmet in the game. Having stats higher than the dragon full helm, and higher, or equal to all barrows equipment. Only being beaten by the helm of netiznot by not having a prayer bonus. The helmet requires 75 Defence to wear. It can be made at level 52 crafting by using a chisel on a serpentine visage, giving the player 120 Crafting experience.

The helmet is charged with Zulrah's scales, requiring 11,000 scales to fully charge it; the helmet cannot be equipped if it is uncharged. Once charged the helmet will last for 15 hours of combat, before returning to its uncharged state. It has the highest strength bonus in the head slot, making it one of the best helmets in the game.

When equipped, the helmet will grant immunity to venom and poison. In addition, if an opponent attacks a player with the helmet equipped, there is a 1 in 6 chance the opponent will be inflicted with venom, providing that they are not immune to poison.

If a player dies with the helmet, any scales that were used to charge it will appear on the floor along with the uncharged helmet.

Several bosses, and many high level slayer monsters are immune to poison, and thus are immune to venom as well. However, some bosses, such as the Dagannoth Kings and TzTok-Jad, are immune to venom; the helmet will inflict normal poison damage on them.