Find and defeat the rare monster Golden Poo Snake.
What you need: Need to be on disc 3, have a mechat, Shoes of Hermes (black device needed for barrier in Ancient Factory (ground floor) and Poo Bracelet (blue barrier chest in Jibral castle, gate)
Location: "Southern Deserted Island". Need a Mechat. Far south of the map.
Recommended Minimum Level: Any so long as you have Poo Bracelet and Shoes of Hermes.
Addon from Atomic Peenut:
but if you go to castle jibral at the main gates there should be a blue chest which you need the bule device from
this gives you the poo bracelet
then in the mechat fly all the way down to the southern deserted island ( as far south as you can go )
and there it is
the poo bracelet means you can kill it almost instantly