Superior slayer monster variant, which has a chance of spawning on a Basilisk's death after purchasing the Bigger and Badder unlock for 150 Slayer reward points from any Slayer master.Number of Basilisks assigned is increased to 200-250.
Increase the risk against certain slayer monsters with the chance of a superior version spawning whilst on a slayer task. Konar, Duradel and Nieve will be able to assign Basilisks as your task.