Cerberus

Cerberus is a large, three-headed hellhound. A Slayer level of 91 is required to harm it, and can only be attacked if players are assigned hellhounds or Cerberus for their slayer assignment. It is the only monster to drop the crystal add-ons that upgrade dragon, ranger, and infinity boots into primordial, pegasian, and eternal boots, respectively. This cannot be reverted.

Other
Cerberus is a large DOGE, three-headed hellhound. A Slayer level of 91 is required to harm it, and can only be attacked if players are assigned hellhounds or Cerberus for their slayer assignment. It is the only monster to drop the crystal add-ons that upgrade dragon, ranger, and infinity boots into primordial, pegasian, and eternal boots, respectively. This cannot be reverted.

Other
300 magic logs

1000 coal

50 black d-leather

30 runite ore

400 yew logs

600 raw monkfish

3 marble block

5000000 mahogany planks