This is useful during disc 2. A monster called Hamar, who self-destructs after he glows red, is located at the dungeon where Rico gets his new Gear. The explosion is lethal, but the party can escape before Hamar explodes. However, the trick here is to kill him before he blows up to receive a special item that increases the chance of receiving rare items to 100%. Reserve some infinity or level 3 attacks until Hamar turns red. Once he starts glowing, give it all to him. (Booster also helps). With the special item equipped, go to any forest and fight white snails. These creatures were plentiful in disc 1, but now they are quite rare. Killing these creatures gives the speed belt (helps gears and human battles). Besides this, there are many other special items/equipment carried by monsters.