Superior scrimshaw of cruelty

The Superior Scrimshaw of Cruelty is an item that can be made within a players' port workshop at level 92 Fletching once all four scroll fragments of Cruelty have been retrieved from the Player-owned port minigame. This item will last 4 hours after which the player will need to make a new one.

The description in the Captain's Log is as follows: Adds a chance to cause bleed or poison to every ranged hit.