In Zoltyum there are special rewards which can be obtained by slaying monsters, one of them are monster orbs.
Orbs are special rewards that you can obtain by slaying monsters with a % spawn chance, granting you Creature Products and even Tokens.
There are two types of Monster Orbs: Normal Monster Orbs and Special Monster Orbs.
Orbs are gathered automatically by using 3 energy points, and as soon as you stay at least 11 SQMs from the orb for 3 seconds.
Every normal creature ingame (without an emblem) has a 1% chance to spawn a monster orb when you slay them.
Here is a list of the spawn chance for monster class orbs: