Once the scroll has been read it takes a while for the spell to act, so don't expect it to save you in a crisis. Reading a second scroll before the first has had a chance to take effect will cancel both scrolls. Much of the treasure within the dungeon can be found only by mining it out of the walls. Many rich strikes exist within each level, but must be found and mined. Quartz veins are the richest, yielding the most metals and gems, but magma veins will have some hordes hidden within.
Mining is rather difficult without a pick or shovel.
The higher the number, the better the magical digging ability of the tool. A pick or shovel also has plusses to hit and damage, and can be used as a weapon, because, in fact, it is one. When a vein of quartz or magma is located, the character may wield his pick or shovel and begin digging out a section. When that section is removed, he can locate another section of the vein and begin the process again. Since granite rock is much harder to dig through, it is much faster to follow the vein exactly and dig around the granite.