Rockworm is one Toshimon you will want in your collection just to show off. These Toshimon cultivate glittering crystals on their backs to blend in with their environment. While less difficult to find than Gemsnake, it can still take some hard searching to make out where they are among the various stones that line the entrances to the crystal caverns where they live. The trick is to get them to move, but not frighten them as their special attack is to use their powerful bodies to trigger a sinkhole right underneath their enemy! It sure is not easy to climb out of one of those. Try tempting them into coming near you with some special crystals of your own- the higher the vibrational frequency the better!