1. Speak to Trader Sarien at the Southern Wasteland entrance.

2. He asks you to hunt:

• Wondering Eye, Hungry Eye, Monster Eye Watcher, Monster Eye Destroyer
  • To get - Monster Eye's Lens and Monster Eye Carcass
• Lesser Basilisk and Basilisk
  • To get - Basilisk's Gizzard

3. You can get an unlimited number of these items and return at any time with any amount. The reward is 30a for Monster Eye Carcass's, 75a for Basilisk's Gizzard, and 2000a for Monster Eye's Lens.