Monster Stones are items dropped by certain mobs. When in a party, only the
party leader can use the stone. Using it will warp you to a dungeon that is
similar to Monster Suppression Squad III.
Monsters in this dungeon may drop Fragments of Steel, Fragments of Augite
and Old Accessories. (The 3rd ingredient, Training Stone, must be purchased
from Jewel for 1 million Noahs.)