The Orb of Slaying is given to a player when they first start the slayer skill. A replacement Orb of Slaying can be bought from any of the slayer master shops for 5gp.
The orb has three options:
1. What is my current task?
Displays the player's current task in the 'All' tab.
2. Use orb tracking
Shows the direction of the nearest tasked npc.
3. Slayer info
Displays the player's slayer points and slayer tasks completed.